General plastics, biodegradable plastics, engineering plastics, modified plastics, recycled plastic plastic alloys, general plastics engineering modified products, plastic products, various engineering plastic molding materials, semi-finished products and finished products, reinforcing materials, various fibers, masterbatches, resins, polyurethanes, additives, adhesives, antioxidants, anti-fogging agents, antistatic agents, sealants, polymerization inhibitors, light stabilizers, colorants, coupling agents, flame retardants, molding agents, heat stabilizers, lubricants, plasticizers, anti-ultraviolet light stabilizers, titanium dioxide, calcium carbonate, talcum powder, etc.;