The meaning of the plastic cup mark(1)

No. 1 Pet polyethylene terephthalate（plastic cup)
Common mineral water bottles, carbonated beverage bottles, etc. Heat resistant to 70 ℃, easy to deform, and substances harmful to human body melt out. 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

No. 2 HDPE(plastic cup)
Common white medicine bottles, cleaning products and bath products. Do not use it as a water cup or as a storage container for other items. Do not recycle if the cleaning is not complete.

No. 3 PVC(plastic cup)
Common raincoats, building materials, plastic films, plastic boxes, etc. It has excellent plasticity and low price, so it is widely used. It can only resist heat at 81 ℃. It is easy to produce bad substances at high temperature, and it is rarely used in food packaging. Difficult to clean, easy to residue, do not recycle. Don't buy drinks.

No. 4 PE polyethylene(plastic cup)
Common fresh-keeping film, plastic film, etc. When high temperature has harmful substances, toxic substances enter the body with food, which may cause breast cancer, neonatal congenital defects and other diseases. Don't put the plastic wrap in the microwave.