What does 1-7 in the plastic cup triangle stand for?

In the triangle of plastic cups, 1-7 stands for:

"1"-PET (polyethylene terephthalate) will produce carcinogens if used for 10 months.

"2"-HDPE (high density polyethylene) is not easy to clean and easy to breed bacteria.

"3"-PVC (polyvinyl chloride), which is easy to produce carcinogens when exposed to high temperature and oil.

"4"-LDPE (low density polyethylene) is easy to produce harmful substances at high temperature.

"5"-PP (polypropylene), special material for lunch boxes in microwave ovens.

"6"-PS (polystyrene) is heat-resistant and cold-resistant, and cannot be used in microwave.

"7"-PC, etc., is used to make baby bottles, space cups and space bottles, but the water cups made of this material can easily release the toxic substance bisphenol A at high temperature, which is harmful to human body. Don't heat this cup when using it, and don't bask in the sun.

Use safe plastic products.

In order to ensure our health, we need to choose to use safe plastic products in our daily life. According to Nanjing Daily, when buying plastic drinking cups, consumers should pay attention to whether the information on the product label is complete, including the manufacturer, production license number, implementation standard and material.

Among them, the materials should list in detail all the materials that may come into contact with food, including cup cover, cup body, straw and so on. Experts suggest that plastic food containers, including children's plastic cups, should be made of PP as much as possible.

In addition, consumers should try to avoid using plastic containers or plastic bags to put hot water, hot soup, tea and coffee, and also avoid using microwave ovens to heat food in non-dedicated plastic containers.