Fastener plastic products manufacturing industry belongs to what industry?

Plastic products industry. According to the latest national economic industry classification (GB/T4754-20 1 1), we can know that the fastener plastic products manufacturing industry belongs to the plastic products industry. Plastics are high molecular compounds polymerized by addition polymerization or polycondensation of monomers. Its deformation resistance is between fiber and rubber, and it is composed of synthetic resin, filler, plasticizer, stabilizer, lubricant, pigment and other additives.