Hubei AD Building Materials Co. ? Ltd. ???? ???? "GB / T 5836.1-2018 ?????? ?????? ????? ?????? (PVC-U) ????? ?????" ???????? ? ????? ?????? ????? PVCU ????? ????? ?? 32 ?? ??? 400 ??.

Hubei AD Building Materials Co. ? Ltd. ???? ????? ????? ???????? ??????????? ????? ??? ??????? ?????? GB / T5836.1 ? ????? ????? ??????? ??????? ?????? ?????? ??????? ?? ?????? ????? ??????. ??? ??? ????? ??? ?????? ??? ??????? ?????? ????? ??????????? ????? ?????? ????? ? ??? ?????? ??????? ?? ??????? ?????? ??????? ? ?? ????? ?? ??????? ?? Hubei AD Building Materials ? ????: 17399989993 ? ???? ???? ?? ?????? ???????!