Contact lens abrasion of the cornea is true or false

  Comment expert: Tang Ping, colleagueOptitometry CenterTechnical Director

  Correct the misunderstanding: Contact lenses don’t actually touch the cornea directly

   Does the contact lens wear the cornea? The contact lens does not touch the surface tissue of the cornea at all. No human body has noticed this at all.

Tang Ping, technical director of    Tongren Optometry and Optician Center, pointed out that when wearing contact lenses, there is a layer of “tear fluid” between the lens and the cornea. The lens is equivalent to lubricating and protecting the human eyes. The effect of tears is cut into two. Therefore, the lens that can’t fit the cornea is bound to be impossible to wear and abrade the cornea.

   In addition, human corneal cells are not static and less and less. They protect the internal tissues of the eye through normal natural shedding and regeneration. The corneal cells will play a protective role if the eye is stimulated by wind and sand fans. And fall off, but can regenerate and recover within 24 hours.

   Therefore, the loss of human corneal cells is not so terrible, and it will not become less and less and eventually blindness. It is really improper wearing and unclean nursing methods for corneal injuries, such as wearing extraordinarily time, unclean hands, causing corneal infection and damage.

   correct the misunderstanding: modern production technology rarely does not fit the situation

   Speaking of the inconsistency of contact lens concave and corneal convexity, this situation is It has been found less and less in the current production technology. Tang Ping pointed out that if the problem of concave-convex molding is pushed forward ten years, it may happen. But with the development of medicine and technology, this kind of problem is relatively rare in outpatients.

   contact lenses belong to the third category of national medical devices, and they must be strictly reviewed and approved for marketing. Therefore, as long as you go to a regular eyewear shop to buy regular brand products, you can subsidize unevenness, hypoxia, and other issues. Don’t worry too much.

   In addition, the corneal leukoplakia mentioned in the Internet news, which is caused by the complications of infectious keratopathy or corneal trauma, has nothing to do with the problem of hard spectacle concave-convex molding, which has a low probability of occurrence.

  Precautions against danger: Not suitable for wearing in dust and laboratory environments

  Contact lenses are the crystallization of modern technology and wisdom, and in many ways help humans avoid wearing frames The inconvenience caused by the mirror. While discussing the hidden dangers of contact lens wearing, we must also discuss how to correctly choose, wear, care and replace contact lenses.

  Tang Ping reminds everyone that people who often stay in a dusty and volatile chemical reagent space for a long time should try not to wear contact lenses. The reason is easy to understand. Dust and volatile chemical reagents are easy to adhere and change with the materials of contact lenses, which will further affect eye infection and even damage.

   Prevention of danger:Stomach diseasePatients andSkin diseasesPatients wear Taboo

Air-conditioning bacteria exceed the standard and easily blow moldy rice, be wary of harming your health

The mold culture dish of the sample after    air-conditioning cleaning is basically transparent.

   Recently, the China Centers for Disease Control and Prevention, Shanghai Centers for Disease Control and Prevention, Fudan University School of Public Health and other institutions conducted on-site household air-conditioning in Shanghai, Beijing, and Shenzhen. The survey found that 88% of the air-conditioning radiator had a total number of bacteria exceeding the limit, and 84% of the air-conditioning radiating fin had a total number of molds. The bacteria detected in the air-conditioning radiator exceeded the limit by more than 1,000 times.

  , Zhang Liubo, chairman of the Disinfection Branch of the Chinese Preventive Medicine Association, introduced that in addition to adsorbing a large amount of dust, the air conditioner also contains mites, bacteria, fungi and other pathogenic bacteria. During operation, bacteria and fungi inside the air conditioner, especially the heat sink, are ejected from the air outlet and enter the human body along the respiratory tract, which can easily cause dizziness and fatigue, and even suffer from respiratory diseases such as colds, rhinitis, and asthma. Therefore, many air-conditioning diseases are not only caused by the alternation of cold and heat, but also the pollution in the air-conditioning.

   How many pollution sources are hidden in household air conditioners? A few days ago, the reporter walked into ordinary households with experts from the Disinfection Branch of the Chinese Preventive Medicine Association and the staff of the Home Security Laboratory to observe, take samples, and send them to the laboratory for cultivation. The results of the experiment were astonishing.

  [Experiment 1]

  A bowl of air conditioning in 72 hoursrice

  Experimental purpose: to test whether the air conditioner will produce pollution.

  Experimental process: Take two equal bowls of white rice, place them on the table under the wall-mounted air conditioner, and cover one of them. Close the doors and windows and turn on the air conditioner. After 72 hours, the covered rice was only slightly discolored, but the bowl of rice that was exposed to the air conditioner had grown hairy and there was a lot of mildew.

   Citizen’s question: Before the air conditioner was turned on in June, the filter was cleaned with detergent and water. Why did it still happen?

  Experts: Zhang Liubo, chairman of the Disinfection Branch of the Chinese Preventive Medicine Association, introduced that after the air conditioner is used for a period of time, there will be dust and dirt deposited on the surface of the outer cover and filter, which are easy to clean. But the most concentrated part of air conditioning bacteria-the heat sink is often overlooked.

   is the core component of the air conditioner’s heat and cold exchange. In addition to accumulating dirt and dust, the heat sink also breeds a large number of germs under the action of condensed water. In addition, when the air conditioner is turned on, the doors and windows are usually closed tightly, and the air does not circulate, especially in the summer, which is hot and humid, and germs are more likely to breed.

  [Experiment 2]

   Air conditioning heat sink hides a large number of bacteria

   The purpose of the experiment: through the naked eye , Observe how much dirt is hidden on the air-conditioning radiator.

   Experimental process: Choose a household wall-mounted air conditioner that has been used for more than 3 years and has not been cleaned this year. Open the air conditioner cover, the exposed filter net, you can see a thick layer of dust, use cotton swabs and paper towels to sample. Remove the filter, you can see the blue-black air conditioner heat sink. At first glance, there is not much dust, but using a cotton swab to scrape the heat sink, you can scrape out a black-gray sludge. Take a sample with a white paper towel, you can see a lot of dirt on the heat sink.

   citizens question: Are there any pathogens in the black muddy dirt?

  Experts’ doubts: Zhang Liubo introduced that a professional health agency found that a large number of bacteria and fungi were hidden on the heat sink of household air conditioners, and the average total number of colonies was as high as 4,765 per square centimeter. The pathogenic bacteria mainly include mold, Legionella, Staphylococcus aureus and many other bacteria. When the air conditioner is running, the pathogenic bacteria on the radiating fins are ejected from the air outlet and enter the human body. It is easy to cause dizziness and fatigue, and even suffer from respiratory diseases such as colds and pneumonia.

  [Experiment 3]

  The heat sink pollution is much higher than that of the filter

   Experimental purpose: Compare the pollution degree of air-conditioning radiator and filter.

Children are not suitable for fluoride toothpaste

  Children’s toothpaste has more flavors than adult toothpaste in terms of packaging, flavor and color: strawberry, citrus, and peach flavors, with countless flavors; pink, light green, rainbow bars, colorful colors. What are the ingredients in these toothpastes? Is it suitable for children?

   Shi Jianjie, deputy director of the Department of Stomatology, the Third Affiliated Hospital of Guangzhou Medical College, said that brushing your baby’s teeth is a college question. Fluoride toothpaste, foam toothpaste, and medicated toothpaste are not suitable for children. Parents should pay special attention.

  ”First of all, children under 6 years of age should not use fluoride toothpaste. Topical fluoride can prevent dental caries, but if children use fluoride toothpaste to brush their teeth, once swallowed, the total daily fluoride intake will exceed normal Yes, it will have a certain impact on the development and health of children.” Shi Jianjie said, children under 6 years of age have poor swallowing function, and they are not proficient in brushing their teeth. There will often be more toothpaste remaining in the teeth, and even mouthwash will be swallowed into the belly. Here, if the fluoride toothpaste is used for a long time, it will increase the intake of fluoride in the body and cause “dental fluorosis” (commonly known as “macular tooth”).

   Not only that, Shi Jianjie said that children should not use multi-foam toothpaste. “Toothpaste is divided into three types: more foam, medium foam, and less foam. The amount of foam depends on the amount of soap. Multi-foam toothpaste has a higher soap content and is easy to irritate the oral mucosa in the oral cavity.”

   The proportion of children suffering from dental diseases is high, and many parents will use drug toothpaste for their children for a long time. However, Shi Jianjie said that although drug toothpaste has a certain effect on oral diseases, long-term use will affect children’s oral hygiene. For example, long-term use of anti-inflammatory toothpaste will not only make the pathogenic bacteria in the oral cavity resistant to drugs, but also kill some bacteria while also killing the normal bacteria in the oral cavity, which may lead to new infections. In addition, many drug toothpastes contain alkaloids and irritating substances, and long-term use may cause inflammation of the gums and mouth.

  Children’s brushing “three questions”

When should    start?

   There is no certain rule for when a child starts to use a toothbrush to brush his teeth. It usually starts when the child has more teeth and is used to cleaning the mouth every day. Shi Jianjie divides children’s learning to brush their teeth into three stages:

   The first stage: When the baby is about 6 months old, the first tooth begins to grow, and it is time to “brush the teeth” for the baby. Parents wrap their index fingers with clean gauze, dipped in clean water to help the baby clean the mouth, wash away the attachments on the teeth and gums, this oral care method generally lasts until the child is 2 and a half years old, at which time the deciduous teeth in the mouth are all Sprouted.

The second stage of   : Starting from the age of 2 and a half, twice a day in the morning and evening, parents stand behind the child and teach the child the correct method of brushing (brushing) hand in hand. Children in this period have a certain ability to understand and express. As long as the parents follow the guidance and patiently guide from the shallower to the deeper, it is not difficult for the children to master the correct method of brushing their teeth.

The third stage of   : From the age of 3, children should be able to complete brushing independently after half a year of transitional training. But the children at this time are still very naughty, lacking initiative and self-consciousness, and parents should play a role of supervision and guidance.

How much toothpaste should I use?

  The amount of toothpaste for children brushing is the size of “pea grains”. Now many advertisements for children’s toothpaste mislead parents. In some advertisements, children fill the toothbrush with brightly colored toothpaste, making their mouth full of bubbles. In fact, children’s toothpaste should not be excessive when brushing their teeth, and the amount of toothpaste for children under six is ​​the size of a pea.

Use antiperspirant on hot weather, beware of infections or skin diseases

Ma Xiaoling, director of    dermatology department, said that in general, antiperspirant deodorant products are mainly used for sweating in the underarms, neck, elbows and other areas with more sweating, but only for a small part of the body to reduce sweating. , As long as it is applied properly, it will not cause harm to the body. However, if you blindly suppress sweating, long-term or frequent use of antiperspirant, it will be harmful to the human body.

   Ma Xiaoling said that the human body sweats a lot, which can emit heat in the body and excrete various toxins in the body through metabolism. The sweat is mixed on the body surface and sebum to form milky fat. Membrane, moisturizing and protecting the skin. However, repeated use or long-term use of antiperspirant will cause clogging of pores and abnormal discharge of metabolites. In addition, since the application site is the main perspiration site of the human body, excessive application is still harmful to the human body. Especially when many sweat glands on the body surface of patients with diseases such as hypothyroidism are affected, the application of these products may cause hyperthermia. High, increased waste in the body, and symptoms of poisoning. Some people can cause allergies, local dry skin, etc. A little carelessness may cause symptoms such as sweat spots, skin redness, itching, and even skin pain. In severe cases, it can also cause skin diseases such as folliculitis or hidradenitis.

Clean the toothbrush cup frequently to prevent bacterial entry

  ”When using a toothbrushing cup for a long time, dust, limescale and toothpaste residue in the air can easily accumulate on the bottom of the cup. If it is not cleaned in time, these stains will accumulate and become thicker and form a yellow sticky shape. In addition to the humid environment, a large number of bacteria, especially molds, are more likely to multiply.” Li Hongzhu, an associate researcher at Tianjin Institute of Materia Medica, believes that these dirts may cause oral inflammation when they come into contact with the oral cavity.

   Therefore, the brushing cup should be cleaned and disinfected regularly. You can put a few drops of disinfectant in the water, soak for 1-2 hours, and then rinse; you can also pour a small amount of vinegar on the bottom of the cup so that the stains are completely soaked in the vinegar. After half an hour, it will accumulate on the bottom of the cup. The stains are washed away; many cups are too deep to clean. You can roll the two top ends of the clip with sponges, fix them with rubber bands, and rotate to clean the inside and outside of the cups; take the cups to the sun regularly every week Drying, natural sterilization, better effect.

Understand the special features of toothpaste and teach you to choose the right toothpaste

  1.ToothpasteBasic ingredients: No matter what brand of toothpaste, the basic ingredients are the same, mainly including:

  Cleaning agent: can make toothpaste have foaming and decontamination ability.

   friction agent: can help remove plaque and dirt attached to the surface of the tooth.

   adhesive: It can combine various ingredients in toothpaste into paste.

   fragrance: can make toothpaste have a variety of fragrances, and can remove bad breath.

  2. Toothpaste with special ingredients: In addition to the above-mentioned main ingredients, various drugs are added to the medicated toothpaste. These medical toothpastes mainly include:

  Fluoride toothpaste: Fluoride has a preventive effect on dental caries, so fluoride such as sodium fluoride is added to the toothpaste. This type of toothpaste is mainly used to prevent dental caries.

   Periodontal disease toothpaste: such as chlorhexidine toothpaste, Kangcanning toothpaste, etc. This kind of toothpaste is added with antibacterial drugs, which have a certain preventive effect on periodontal disease. Certain Chinese herbal toothpastes also have some effects on gum bleeding caused by periodontitis.

   Desensitization toothpaste: There is also an anti-acid toothpaste. This type of toothpaste is added with desensitizing drugs, which have a certain effect on the sensitive teeth of cold and acid irritation.

  3. Mouthwash composition: Like toothpaste, the composition of mouthwash is determined by its function. Mouthwashes containing fragrances can remove bad breath; those containing fluoride can prevent dental caries; those containing antibacterial agents have a certain effect on periodontal disease; some mouthwashes (refreshing liquid) contain chemicals that can inhibit the formation of dental plaque. But its effect is not as good as brushing teeth, so refreshing liquid cannot replace brushing teeth.

  4. Precautions for use: When using toothpaste and mouthwash, you should pay attention to:

   1) According to personal needs, choose the right one The ingredients of toothpaste and mouthwash. For example, those who are susceptible to caries should generally use fluoride, and periodontal patients should generally use toothpaste and mouthwash that can inhibit periodontal pathogens.

  2) When using toothpaste, apply a little pressure to squeeze the toothpaste into the gap of the toothbrush bristles. The method of applying a strip of toothpaste to the tip of the toothbrush bristles is wrong.

  3) Children can not use fluoride toothpaste before the age of 3, and children over 3 years old should try to use fluoride toothpaste, but under parental supervision, the size of soybeans is enough each time.

  4) Whether it is toothpaste or mouthwash, you should be careful not to swallow it when using it, otherwise it may cause certain adverse reactions. Children should be especially careful.

  Children’s toothpaste precautions

   The prevalence of dental caries is closely related to the fluorine content of the teeth. Too much or too little fluoride is not good for health. Generally speaking, children’s dental fluoride content is significantly lower than that of adults, and the prevalence of dental caries is also significantly higher than that of adults. The primary method to prevent caries is to develop good oral hygiene habits. Using fluoride toothpaste can improve the ability of teeth to resist caries. However, parents should pay attention to the following points when choosing toothpaste for their children:

  1, the fluoride content of toothpaste should not be too high

   According to the survey, Children aged 2 to 4 years only need to brush their teeth twice a day, and the fluoride content of their toothpaste unconsciously ingested is sufficient for the daily fluoride requirement of children in non-fluoride-deficient areas, plus the daily intake of fluoride from the diet. Too much fluoride intake in this way will potentially cause the risk of dental fluorosis. Therefore, children should not use adult toothpaste, and should use children’s toothpaste with lower fluoride content.

  2, avoidmintadditives

   toothpaste containing mint additives is not easy for children to accept, so Not suitable for use.

  3. Use fruit-flavored toothpaste with caution

  Some children’s toothpaste has a fruity taste. About 1/4 of the children swallow the toothpaste directly. Parents Attention should be paid to education and prevention.

  4. Children should not use multi-foam toothpaste

   There are three types of toothpaste: more foam, medium foam, and less foam. The amount of foam depends on its content. The amount of soap. Multifoam toothpaste contains more than 18% soap. Soap is easily decomposed into caustic alkali or ester acid in oral saliva, which not only stimulates oral mucosa, but also destroys the enzymes in saliva. In addition, the soap content is large, the friction is correspondingly reduced, thereby affecting the cleaning effect. Therefore, parents should not choose multi-foam toothpaste for children.

  5. Children should avoid long-term use of drug toothpaste

   There are many TV commercials of drug toothpaste, and the proportion of children suffering from dental disease is very high. Parents love their children. , I often use medicine toothpaste for children for a long time. As everyone knows, the substance will be the opposite. If medicine toothpaste is used for a long time, it will affect the children’s oral hygiene.

Learn to clean drinking fountains to avoid bacterial hotbeds

   As we all know, the water dispenser is usually the neck of the barrel of water is turned upside down and placed on the “smart seat” of the water dispenser, and then the water is introduced into the two tanks by the hose in the machine, one of which is hot water Gallbladder, one is cold water gall. In addition to the function of producing hot and cold water, these two water bladders can also play a role in precipitating impurities in the water.

   Most citizens would think this way: the drinking fountain itself is a water purification device, and the bottled mineral water is clean, even if the drinking fountain is not cleaned and disinfected regularly. What’s the problem.

   is actually not the case. He Changyun, director of the Environmental and School Health Office of the Guangdong Provincial Center for Disease Control and Prevention, said that people usually keep changing bottled water repeatedly, but ignore that there is still a certain amount of water in the tank of the drinking fountain, which will hide disease-causing bacteria. , It has naturally become a breeding ground for bacteria. “Therefore, the drinking fountain must be thoroughly cleaned and disinfected by professionals on a regular basis.” He Changyun said.

   What should I do if I want to clean it myself? He Changyun introduced that the current commonly used method is to clean with professional disinfectant, and then flush the drinking fountain with clean bottled water until the residue of the disinfectant is washed away. The specific steps are as follows:

  1 Cut off the power of the water dispenser;

  2 Turn on the red hot water faucet and blue cold water faucet until there is water, turn off the faucet, and then hold the bottle upward with both hands Take out the water bottle;

  3 Clean the exterior of the water dispenser and the smart seat;

  4 Pour 600ml of special cleaning and disinfection solution (such as sodium hypochlorite that can be used for drinking water disinfection) into the water storage tank;

  5 After 10 minutes, turn on the red and blue taps until the disinfectant is exhausted;

  6 Unscrew the back or bottom drain valve of the machine to drain the disinfectant in the dispenser;

Applying too much toilet water can cause heat stroke Expert: Appropriate amount should be applied

  Hefei citizen Ms. Zhang has chronic pharyngitis and feels uncomfortable with electric mosquito coils, so she applies a lot of toilet water every day. As expected, the mosquitoes don’t bite her, and after the toilet water is applied, her body is particularly cool, which can kill two birds with one stone. But on the night of the 16th, Ms. Zhang’s eyes suddenly went dark, followed by chest tightness, nausea and other symptoms. The family rushed her to the Second Affiliated Hospital of An Medical College. The doctor diagnosed heat stroke.

   The doctor’s explanation made Ms. Zhang confused. The heatstroke was caused by too much toilet water. According to the doctor, the toilet water contains 75% alcohol and 5% fragrance ingredients. When applied to the skin, the alcohol will take away the body’s heat and produce a cool feeling. However, if you use excessive amounts for a long time, the epidermis will have difficulty in perspiration, which will lead to functional disturbances in the heat dissipation system. The sweat will not flow out, the body’s heat will be nowhere to be excreted, and the heat will accumulate, chest tightness, nausea, headache and other heatstroke symptoms will follow. .

There is a lot of dirt in the washing machine, teach you to clean and remove hidden dangers

  Every time you wash your clothes, do you think the clothes are really clean? The dirt left in the inner tub is not completely drained away with the sewage, and some are attached to the inner wall of the washing machine. Year after year, the inner wall of the washing machine already has this large amount of bacteria. As the number of times you wash clothes increases, Increase with it. Even if they are washed separately, the repeated washing process of underwear and outerwear also increases the number of bacteria. “Washing machine washing is actually a process of infecting certain bacteria to the next tube of clothes. Some bacteria may not be eliminated even by drying, especially underwear.” Han Guangen, deputy director of the Department of Environmental Hygiene, Shanghai Centers for Disease Control and Prevention At the meeting, the public was also reminded that they must be alert to the “secondary pollution” of washing machines. The current fully automatic washing machines are more difficult than traditional double-cylinders because of the difficulty of draining the residual water cleanly, and the small gap between the dehydration tank and the washing tank. Type washing machines are more likely to cause the growth of mold.

   An investigation showed that there are not only pathogenic bacteria in the inner tank of the washing machine, but also severely exceed the national sanitary standards for cleaning and disinfection of public supplies in the hotel industry. Among the pollutants in the washing machine’s inner tank, not only general pathogenic bacteria such as mold and coliform bacteria were detected, but also pathogenic bacteria such as Pseudomonas aeruginosa, spoilage bacteria, fermenting bacteria and cryptococcus were found.

   Professor Gui Suiqi, a doctoral supervisor at the Obstetrics and Gynecology Hospital of Fudan University, said that up to 60.2% of the molds detected in the washing machine tank are very dangerous for women. At present, international statistics show that 75% of women have a primary infection with mold, but after treatment, the rate of secondary infections with mold is still as high as 40%. Moreover, the treatment of fungal vaginitis is very stubborn, especially for pregnant women, once infected with mold, the probability of miscarriage, premature delivery and even stillbirth is extremely high. Fungal vaginitis can also easily cause women’s pelvic inflammatory disease, cervicitis, cervical erosion and other gynecological diseases, and the impact on women’s health is particularly serious.

   In fact, most of the bacteria in the washing machine are hidden in the interlayer between the inner tank and the outer drum, which is the inner tank of the washing machine. All current fully automatic washing machines have an inner tank. When the washing machine is working, the outer tube basically does not rotate, and the inner tube rotates. In the process of washing clothes, the dirty water that has been washed is drained from the inner tank and will stay in the inner tank for a period of time. However, the drainage speed is not very fast. As it accumulates over time, the inner tank is naturally easy to leave dirt. The interlayer of the washing machine is like a sewer, with scale, free laundry detergent, clothing fibers and other organic matters attached to it. If it is not cleaned up in time, the debris attached to the interlayer will ferment and breed bacteria. Moreover, many families prefer to place the washing machine in poorly ventilated and humid places such as the bathroom, where the environmental humidity is high, which will promote the proliferation of bacteria. The investigation also found that the current fully automatic washing machines are more likely to cause mold growth than traditional two-cylinder washing machines due to the difficulty of draining the residual water cleanly and the small gap between the dehydration tank and the washing tank.

   For ordinary citizens, it is very useful to develop scientific washing habits in tackling the secondary pollution of washing machines. First of all, the washing machine should be placed in a ventilated and bright place; secondly, underwear and coats should be washed separately to reduce cross-contamination of clothes. Finally, after washing the clothes, you should open the lid of the washing machine to ventilate for a period of time to keep the inside dry to promote the volatilization of residual moisture and inhibit the growth of microorganisms, and the clothes should be taken out to dry immediately, not to be stuffed inside. If conditions permit, the washing machine can be cleaned regularly after three months or six months of use. The special cleaning and sterilizing agent for washing machine can disinfect and clean your washing machine in a simple, easy and convenient way.

Eight “fatal” dangers of washing machines

  1, wash it all in one water

   When some people wash their clothes, they save water. Usually they wash their underwear first, and then wash their outerwear. , And then wash socks and other sundries, a basin of water to wash to the end, dirty and black. Although this ensures the cleanliness of part of the clothes, the final laundry is very polluted. Especially the mixed washing of socks and women’s underwear is more harmful and can cause female genital diseases.

  2. Do not clean the washing machine for a long time

   Some people’s washing machine never cleans, as long as it rotates and keeps washing, the inner wall of the drain is full Cloth debris and dirt can breed many viruses and bacteria. During the laundry process, these dirt and bacteria will contaminate the clothes.

  3. Excessive use of detergent

   Many people think that the clothes are too dirty, or think that the detergent is cheap, and often overuse detergent, but rinse Time is not enough, and detergent often remains on clothes. Most of the detergents are alkylbenzene compounds, which are irritating to the skin and also affect the liver function.

  4. Wash all the clothes together

   Some people put all the changed clothes in the washing machine together for convenience and save trouble, and stir them in the washing machine. During the rubbing process, bacteria, colors, and shed fibers on the clothes will inevitably contaminate each other. The laundry you get to the dry cleaners is more complicated. There are healthy people, sick people, and perhaps infectious disease patients.

  safety hazard

  1, electric shock hazard: do not pull the cord forcibly to unplug the power plug; do not plug/unplug the plug with wet hands

  2. Explosion hazard: washing clothes containing solvents is prone to explosion hazard; if there is no special down jacket washing procedure, washing the down jacket with a washing machine is very easy to explode.

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