91久久久久久精品免费观看,日韩精品无码电影,一级无码日韩精品,国产午夜毛片v一区二区三

1 stands for pet (polyethylene terephthalate): at present, this material is used in general mineral water, carbonated beverage and functional beverage bottles. Heat resistant to 70 ℃ and easy to deform.

2 stands for HDPE (high density polyethylene): common white medicine bottles, cleaning products and bath products. High temperature resistance, but not easy to clean, easy to breed bacteria, do not recycle.

3 for PVC (polyvinyl chloride): rarely used in food packaging. It is difficult to clean and easy to remain. Do not recycle it. Do not buy any drinks.

4 stands for LDPE (low density polyethylene): common fresh-keeping film, plastic film, etc. Harmful substances will be produced at high temperature. Do not put the fresh-keeping film into the microwave oven.

5 stands for PP (polypropylene): the only plastic box that can be put into the microwave oven and can be reused after careful cleaning.

6 stands for PS (polystyrene): This is the material used to make bowled instant noodle boxes and foaming fast food boxes. It is heat-resistant and cold resistant, but it cannot be put into the microwave oven. It cannot be used to contain strong acids (such as orange juice) and strong alkaline substances.

7. On behalf of other categories: it is a kind of material widely used, which is mostly used to make milk bottles, space cups, etc. Try not to use it to hold boiling water.

This article is from Jiangmen Engineering Plastics:http://m.jzxhuodongfang.com/