1, glass fiber reinforced plastic (FRP), also known as GRP, that is, fiber reinforced plastics, generally refers to the use of glass fiber reinforced unsaturated polyester, epoxy resin and phenolic resin matrix. Reinforced plastics made from glass fiber or its products are referred to as glass fiber reinforced plastics or glass fiber reinforced plastics. Because of the different kinds of resins used, they are called polyester glass fiber reinforced plastics, epoxy glass fiber reinforced plastics and phenolic resin glass fiber reinforced plastics. Light and hard, non conductive, high mechanical strength, less recycling, corrosion resistance. It can be used instead of steel to make machine parts, automobiles, ship shells, etc..
2, PVC in the field of chemical engineering refers to compound pvc. Polyvinyl chloride. This is the most widely used meaning of PVC. Rigid PVC is one of the most widely used plastic materials. PVC material is a kind of non crystalline material.
3, stainless steel (Stainless, Steel) refers to air, steam, water and other weak corrosive medium and acid, alkali, salt and other chemical corrosive medium corrosion of steel, also known as stainless acid resistant steel. In practical application, the steel which is often corroded by weak corrosive medium is called stainless steel, and the steel which is resistant to chemical medium is called acid resisting steel