1. PET & PETE（Polyethylene terephthalate）:
Common mineral water bottles, carbonated beverage bottles, cosmetic bottles, etc. Also commonly known as "Baote bottle", it is heat-resistant to 70 ℃ and easy to deform, and substances harmful to human body melt out.
When pet encounters oil esters or alcohol products, it is easy to produce a carcinogen DEHP. The heat resistance of the plastic bottle is 70 ℃, and it is easy to release the carcinogen DEHP after being exposed to the sun or stored in a muggy and high-temperature environment for a long time. DEHP is phthalate ester. It is one of the most important plasticizers. 90% of DEHP is used in PVC plastics.
No. 1 plastic may release carcinogen DEHP after 10 months of use. Do not put it in the sun in the car; Do not contain alcohol, oil and other substances.
2. HDPE（High density polyethylene）:
Containers for detergents, shampoos, shower gels, edible oils, pesticides, etc. are mostly made of HDPE. The container is mostly opaque and feels like wax.
Do not use it as a water cup or as a storage container for other items.
This material itself is difficult to clean thoroughly, so it is recommended not to recycle.
3. PVC（Polyvinyl chloride）:
It is mainly used to manufacture water pipes, raincoats, schoolbags, building materials, plastic films, plastic boxes and other utensils. Excellent plasticity and low price, so it is widely used.
It can only be heat-resistant at 81 ℃, and it is easy to produce bad substances at high temperature, which is rarely used in food packaging. Difficult to clean, easy to residue, do not recycle.
4. LDPE（Low density polyethylene）:
Plastic bags that can be seen everywhere are mostly made of LDPE. Common PE fresh-keeping film, plastic film, etc. When high temperature, there will be harmful substances. Over 110 degrees centigrade, there will be hot melting. Toxic substances can enter the body with food, which may cause breast cancer, neonatal congenital defects and other diseases. Suggestion: do not wrap the fresh-keeping film on the food surface into the microwave oven.
5. PP（Polypropylene）:
Common kitchen utensils are mostly used to make buckets, garbage cans, baskets, baskets and food containers for microwave ovens.
The melting point is as high as 167 ℃. It is the only plastic box that can be put into the microwave oven and can be reused after careful cleaning. It should be noted that for some microwave oven lunch boxes, the box body is made of No. 5 PP, but the box cover is made of No. 1 Pet. Because pet can not withstand high temperature, it can not be put into the microwave oven together with the box body.
