AD Pipeline Manufacturer ?? ???? ????? ?????? ??????? ????? Yonggao Joint Stock Company ? ?? ?? ?????? ???? ?? ???? ??? ?????? ? ??? ?? ??? Guangdong Yonggao Plastic Industry Development Co. ? Ltd. ? Shenzhen Yonggao Plastic Industry Development Co. ? Ltd. ? Shanghai AD Building Materials Development Co. ? Ltd. ? Tianjin Yonggao Plastic Industry Development Co. ? Ltd. ? Chongqing Yonggao Plastic Industry Development Co. ? Ltd. ? Anhui Yonggao Plastic Industry Development Co. ? Ltd. ? Hunan AD Building Materials Co. ? Ltd. ? ??? ??? ??? ? ?? ????? ????? ????? ??? ????? ? ????? ??????? ????? ????? ?? ???? ???? ???? ???????????. ???? ?????? Hubei ??????? ?? Hubei AD Building Materials Co. ? Ltd. ? Hubei AD Pipeline sales phone 17399989993.

HDPE ????? ?????? ?????? ???????? ? PVC-U ????? ?????? ?????? ? PVCU ??????? ?????? ???????? ?????? ????? ????? ? PE ? PP ????? ?????? ?????? ???????? ? ????????? ??????????? PVCU ?????????? ? PVCU ???? ??????? ????? ?????????? ? ?????? ?????? ??????? ???????? PPR ?????????? ? ??????? ?????? ?????? ??????? ???????? PE-RT ? ??????? ?????? ??????? ?????? PE ? ??????? ?????? ????? PE ? ?????? ??????? ??????? ???????? PVCU ? ?????? Youjia PPR ??????? ????????? ? ?????? ????? ??????? ???? ???????? ???????? ?????? ?????? ? PEPP ????? ?????? ?????? ?????? ???????? ? HDPE ????? ??????? ?????? B ??? ??? ???????? ? ?????? ????? ? ????? ??????? ?????? ?????? ??????? PE ????? ?????? ???????? ? HDPE ???? ?????? ????? ???? ????? ???? PE ?????? corrual corrual AD ???? ?????? ???????? ??? ??????? 17399989993 ? ????? ??? ?? ??????? ????? ???????? ????????.