?????????????????????????

                                                                   1??PP?????(polypropylene)?????????????????????????????????????????????????????????????

                                                                    2???????????????????????????????е?????????????????????????????????????????????????

                                                                    3??PVC?????????(polyvinyl chloride)????????????????????????????????????????????????????????????????????????????????

                                                                    4;PA6,PA66???? ?????????????????????????????????????????????????????????????????????

                                                                    5??TPU????????????(polyurethane)???????????????????????????????????????????????????????????￡????????????κλ?????

                                                                    6??TPR ??????????????????????????????е???????????????????????????????棬??????????????????????????????