1, melamine plastic, commonly used in the manufacture of bowls, plates, chopsticks, spoons and other tableware. It uses melamine and formaldehyde resin as main raw materials. Appearance and feel like porcelain, acid and alkali resistance, high surface hardness and impact strength, long service life. If the melamine in inferior imitation porcelain tableware is not completely polymerized, some of it will melt into food.

2. Fake porcelain-like tableware is made of urea-formaldehyde resin or phenolic resin. Its appearance is very similar to that of genuine porcelain-like tableware, but it contains high formaldehyde, which is easy to precipitate after heating, which is harmful to the body.

3. HDPE is suitable for bottles of food and medicine, cleaning products and bath products, shopping bags and trash cans.

4. Polyethylene terephthalate (PET), made of ethylene. Commonly used as mineral water bottles, cola beverage bottles, fruit juice bottles, etc.

5. Polypropylene (PP) polymerized from propylene is more transparent and harder than polyethylene. Most of the boxes used for packaging in restaurants are made of PP, and plastic boxes can be heated by microwave oven.

6. Polystyrene (PS), which is polymerized from styrene, is often used for instant noodle boxes and fast food boxes in bowls. It is heat-resistant and cold-resistant, but it will release harmful substances when the temperature is too high, so it can't be heated in the microwave oven, and try not to use it to hold hot food, let alone strong acid (if it is fruit juice) and strong alkali substances, otherwise it will release styrene and accessories.

7. Polycarbonate (PC) synthesized from bisphenol A and diphenyl carbonate has excellent impact toughness, mechanical strength and good transparency. It is often used to make kettles, cups, milk bottles and so on. However, bisphenol A is easy to seep out, which is harmful to human health.