AD Pipeline Manufacturer ?? ???? ????? ?????? ????? ?? ???? ????? Yonggao ??? ?? ?? ????? ??? ?? ?? ?? ????? ????? ?? ???? 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 AD Building Materials Co., Ltd., Hubei AD Pipeline ???? ???? 17399989993.

???? ?????? ?? ????? HDPE ? ???? ?????? ?? ????? PVC-U ? ??????? ???? ????? ? ????? ?? PVCU ? PE ? PP ???? ?????. ???? ??? ??? ?? ????? ? ????? ? ??????? ???????? PVCU ? ???? ? ??????? ???????? ???? PVCU ? ???? ?? ? ??????? ?? ??? ? ??? PPR ? ??????? ???? ?? ??? ? ??? PE-RT ? ??????? ???? ????? ?? ??? ????? ? ??????? ???? ??? ??? ????? ? PVCU ???? ? ???? ??? ??? ? ???? ?? ?????? Youjia PPR ? ???? ?????? ?? ????? ????? ??? PVCM ?? ?????? ???? ? ???? ????? ??? ???????? ?? ????? PEPP ? ???? B ??? ????? ??????? ???? HDPE ? ???? ????? ? ???? ??? ????? ?????? ??? ????? ????? ??? ?? ???? ????? ? ???? ???? ?????? ?????? ????? ??? ?? ?????? HDPE ? ???? ?????? ????? ??? ?? ???? ?????? ? ???? ??? ??????? PE ? ???? ??? ??????? ??????? ??? 174AD ? ??? ?????? ????? 174AD AD Building Materials Co., Ltd. ????? ???? 17399989993 ??? ?????? ? ???? ??????? ?????? ??? ?????.