?????????????? ???? ?????????? ??????????????????????????????????????????? ??????????? ?????????????? ?????????????????????????????????????????????????? ????????????????????? ????????????????????????????? ???? ?????? ??? ???? ?????????? ???????????????????????????????????????????? ???????????????????????????????????????? ????????????
สายรัดโพลีเอสเตอร์ทำมาจากอะไร ?
??????????????? ??????? ? ?????????????????? ??????????????????????????????????? ?????????????????????????????????????????????????? Ethylene Glycol ??? ??? Terephthalic ?????????????????????????? ????????????? ????? ????????????????????????????????? ????????????????????????????????????????? ??????????????????????????????????????????????