1.PET polyethylene terephthalate
Common mineral water bottles, carbonated beverage bottles, etc. It is easy to deform from heat resistance to 70 C, and has substances harmful to human body to melt out. The carcinogen DEHP may be released from No. 1 plastics after 10 months. Don't put it in the car to bask in the sun; don't fill it with alcohol, oil and other substances!
2.HDPE High Density Polyethylene
Common white medicine bottles, cleaning supplies, bath products. Don't use it as a water cup or as a storage container for other things. Don't recycle if it's not thoroughly cleaned.
Common raincoats, building materials, plastic film, plastic boxes, etc. Because of its excellent plasticity and low price, it is widely used and can only resist heat at 81 C. It is easy to produce bad substances at high temperature, and seldom used in food packaging. Difficult to clean and easy to residue, do not recycle. Don't buy drinks if they are packed.
Fresh-keeping film, plastic film, etc. When high temperature occurs, harmful substances are produced. When toxic substances enter human body with food, they may cause breast cancer, congenital defects of newborns and other diseases. Don't put the film in the microwave oven.