PVC (polyvinyl chloride) material can be used for raincoats, building materials, plastic boxes, etc. , rarely used in food packaging.

PET (polyethylene terephthalate) material can be used to produce mineral water bottles and carbonated beverage bottles. It is resistant to heat up to 70 degrees Celsius, volatile and harmful to human body. DEHP may be released if it is used for a long time. So it can't be used for wine, vinegar and soy sauce.

PP (polypropylene) material is mostly used in plastic boxes that can be put into microwave ovens. It can be used at about 100℃ and can be reused after careful cleaning.

Extended data:

Advantages of plastics:

1, most plastics have strong corrosion resistance and do not react with acid and alkali.

2, the plastic manufacturing cost is low.

3. Durable, waterproof and light.

It is easy to be shaped into different shapes.

5. It is a good insulator.

6. Plastics can be used to prepare fuel oil and gas, which can reduce the consumption of crude oil.

Plastic disadvantages:

1, recycling waste plastics is difficult and uneconomical.

2, plastic is easy to burn, and toxic gases are generated when burning. 、

3. Plastics are products extracted from petroleum, and petroleum resources are limited.

Plastic will rot only if it is buried underground for hundreds of years.

5. Plastic has poor heat resistance and is easy to age.

People's Network-What do the numbers at the bottom of plastic containers stand for? Don't add 7 to boiling water.

Baidu encyclopedia-plastic