There are many kinds of plastics, but there are six common types: PE, PP, PS, ABS, PVC, and PA.

PE is a polyethylene plastic with stable chemical properties. It is usually made into food bags and various containers. It is resistant to acid, alkali and salt aqueous solutions, but it should not be wiped or soaked with strong alkaline detergent.

PP is polypropylene plastic, non-toxic, odorless, can be immersed in boiling water at 100 ° C without deformation or damage, and common acid and alkali organic solvents have little effect on it. Mostly used in food utensils.

PS is polystyrene plastic, easy to color, good transparency, and is used to make lampshades, toothbrush handles, toys, electrical parts. It is resistant to acid and alkali corrosion, but is easily soluble in organic solvents such as chloroform, dichloroethylene and banana water.

PVC is a polyvinyl chloride plastic with bright color, corrosion resistance, and durability. Due to the addition of some toxic auxiliary materials such as plasticizers and anti-aging agents in the manufacturing process, its products generally do not store food and medicine.

ABS is a plastic polymerized from acrylonitrile, butadiene and styrene. Its color is striking, heat-resistant, strong, and the outer surface can be chrome-plated, nickel and other metal films. It can be used to make keys, buttons, tool holders, TV casings, umbrella handles. Wait.

PA is a nylon plastic, which is tough, strong and wear-resistant. It is commonly used in the production of combs, toothbrushes, clothes hooks, fan bones, net bag ropes, fruit packaging bags, etc. Non-toxic, but not in contact with acid and alkali for a long time.