
???? ??????
PVC ??????? ?????? ??????? ????????
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AD PVC ???????? ??? ?????? ???????? ?? ?????? ????? ????? ?? ???? ?????? ??????? ? ??????? ???? ???? ?? ???? ?????? ??????? ? ?? ???? ?????? ?????? ? ?? ...??? ????????
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AD PVC-C ????? ?????????? ?? ?????? ????? ??????? ??-C ?????? ????? ? ??????? ???? ???? ?????? ?????? ????? ?????? ???????? ? ?????? ????? ??...??? ????????
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PVC-U ?????? ??????? ??????????? ???? Hubei AD Building Materials (17399989993) ?? ????? ?????? ????? ?????? PVC-U ? ????? ???? ?????? GB / T1202.1...??? ????????