Plastic boxes can be
　　Inferior disposable plastic lunch box because of its low price, a few cents, so by some small hotel welcome. Such as in the production of low-quality lunch boxes, in general have joined the large industrial grade carbonate limestone, talcum powder, paraffin and other toxic and harmful materials, pose a direct threat to the user's health.
　　Fake environmentally friendly plastic lunch boxes touch soft, gently tear burst, smell pungent, choking eyes, encounter thermal deformation is easy to leak; counterfeit paper box intensity difference, color deep, serious seepage oil leakages; packing box and a lunch box without factory name, the no trademark, no production date; fake boxes with qualified products and after pieces placed in the water to sink (qualified products, the proportion of less than 1 will not sink); cheap, general 0.10 yuan in the following, and truly environment-friendly lunchboxes price of 0.13 yuan of above.
　　The convenient chopsticks need to be vigilant:
　　A lot of people eat out at the time that the disposable chopsticks more health, safety. But some small workshops in order to reduce costs, the use of inferior wood. In order to give chopsticks "white", some criminals will use sulfur fumigation. When eating with the chopsticks, the residual sulfur dioxide enters the body.
　　How to prevent poisoning it? Get the disposable chopsticks, to see whether printed on the packaging manufacturer's name, trademark and contact way; the color is too white disposable chopsticks is not credible, could also smell the smell of chopsticks, if have a sour smell of sulphur, it is best not to use. Do not use chopsticks when eating long time soaking in the hot soup or porridge, because it will accelerate the decomposition of sulfur dioxide. Can be used to clean the surface of chopsticks with cold water to reduce the residual sulfur dioxide.