How can plastic lunch boxes be fake and low-quality disposable plastic lunch boxes? Because they are cheap and can be bought for a few cents, they are welcomed by some small restaurants. For example, a large number of industrial grade calcium carbonate, talcum powder, paraffin and other toxic and harmful materials are generally added to the production of low-quality lunch boxes, posing a direct threat to the health of users. Fake environment-friendly plastic lunch boxes are soft to touch and can be easily torn apart. They are pungent and eyesore when smelled. They are easy to leak in case of heat deformation; Counterfeit pulp lunch boxes have poor strength, dark color and serious oil and water seepage; There is no factory name, trademark or production date on the packing case and lunch box; The counterfeit lunch box is heavier than the qualified product, and it is easy to sink after being torn up in water (the proportion of qualified product is less than 1, and it will not sink); The price is cheap, generally below 0.10 yuan, while the price of a real environmental friendly lunch box is above 0.13 yuan. Convenient chopsticks are too white. Many people think disposable chopsticks are hygienic and safe when eating out. However, in order to reduce costs, some small workshops use inferior wood. In order to "whiten" chopsticks, some lawbreakers will use sulfur fumigation and bleaching. When you eat with these chopsticks, the residual sulfur dioxide will enter your body. How to prevent "poisoning"? After getting disposable chopsticks, check whether the name, trademark and contact information of the manufacturer are printed on the package; Those disposable chopsticks that are too white are not credible; You can also smell the smell of chopsticks. If there is sour sulfur smell, you'd better not use it. Do not soak wooden chopsticks in hot soup or porridge for a long time during meals, because this will accelerate the decomposition of sulfur dioxide. Clean the surface of chopsticks with cold water to reduce residual sulfur dioxide. Colorful straws may not be safe to drink. Many straws are made of waste plastic, which is harmful to the liver and kidney. Some unscrupulous businesses will dye straws in order to cover up the color of straws made of waste plastic. The brighter the color, the greater the security risk. Experts remind that colored straws should not be used. It is possible to use industrial plastics or even waste plastics as raw materials. There are three steps to identify problematic straws: first, look at the information on the production packaging bag, production date, shelf life, production license and number (QS identification). Recognize the color again. Try not to buy colorful ones, and pay special attention to dark ones. Finally, before the straw touches the drink, smell whether there is a pungent odor. If there is an odor, it must be a problem straw. The advantages and disadvantages of disposable paper cups can be distinguished by "one look, two smell and three touch". Look: In addition to the name, address and production date of the manufacturer on the package, you should also look at the light. If there is blue light or impurities, you'd better not buy them; Smell: whether there is pungent smell; Touch: It feels very soft and may be inferior product. Tip: When using disposable paper cups, it is best to first scald them with boiling water to fully volatilize the harmful substances in the cups.