Pothell pecynnu deunydd crai PVC deunydd synthetig plastig

Plastigau: polyethylen; polyvinyl clorid; polystyren; alcohol polyvinyl; polypropylen; asid polyacrylig; polybutene; polyisobutylen; polysulfone; polyoxymethylene; polyamid; polycarbonad; asid polylactig; polytetrafluoroethylene; terephthalate polyethylen; resin epocsi; resin ffenolig; polywrethan