?? > ???? > ??

“??????????????”??????????

????:2024-12-27 07:56:20 ??:????

????:????????:???????

???????,?“?????????????????”???????,?????,?????????“????????”???,?????????,???????????????????????,?????????,?????,12?26??????????????????????????,????????????????????????????????

??????,???????????,?????“??????”???,???????,??GB 4806.7-2023«??????»???????????????????“???”?????????,???,??????????????,?????????????????????,????????????????????????,???

????????,???????????????PE??????????LDPE????????????????????PVDC??????????PVC???????????????????????????,?????????,??????????????,???????????????????

??????????????,?????????????????????????????????:PE?????????>PVDC?>PE???????????>PVC??????:PVDC?????>PE??>PVC?????????????>PE???????????>PE????????????????????,????????????????????,?????????????,?????????????????????;?????????????????????????????????????????????(????????),?????????????????,?????????????

??????,???????????,?????????,????????????,?????,????????,???????????????????,??,??????????????????????????????????????,??PVC???????,?????????????????????????????????????????,???????????,???????????????????????(?????????????????) ?????:????????????????????

????

  • ????
  • ????