Plastic is one of the common materials in our life. The national standard divides plastic tableware into seven categories. We will see a small triangle at the bottom of the plastic product with a number in it. This number is the national standard number corresponding to each type of plastic tableware. . Their numbers are different, and their uses and performance are also different.
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① Mark "01": PET polyethylene terephthalate, a common product made of it is the plastic bottle for beverages, and the mineral water bottles and carbonated beverage bottles we see on the market are this material. The shortcomings of this material are also obvious: it cannot be canned with hot water, and it will deform and melt at a high temperature of 70 °C. It is only suitable for canned cold and warm drinks. Bottles made of this material should be thrown away after use and should not be used as drinking glasses or storage containers. Otherwise it will cause health problems.
② Mark "02": HDPE high-density polyethylene. Products using it as raw materials include detergent, shower gel, shampoo, pesticide, edible oil, etc. The plastic bags in large shopping malls and supermarkets are this material. Most of the products made with it are translucent and can withstand high temperature of 110 ℃. If it is indicated for food, it can be used to hold food. However, since products made of this material are difficult to clean, it is best not to recycle them.