????? ??????? ???? AD ????? ?????? ?????? ????? ?? ???? ????? ? ???? ????? Yonggao ????????? ???? ???? AD ??? ?? ?? ??? 1993 ????? ?? ? ???? ???? ???? ????? ???? ?????? ??????? ??? ? ???? ???? ????? ???? ?????? ??????? ??? ???. ????? ???? ???? ? ???? ???? ????? ??? ????????????? ??????? ???????? ??? (SAC / TC48 / SC3) ? ???? ???? ???? ???????? ??????? ?????? ? ???? ???? ???? ????? ???? ????? ?????? ? ? ????? ???? ?? ??? "??" ???? ??? ??????? ?? ????? ?????? ??? ???? ?? 8 ?????? 2011 ?? ???? ????? ?????? ???? ?? ?? ????: 002641 ??????? ?? ? ????? ????? ???? ????? ?????? ??? ?????? ???: ??? ?????? ???? ????? ???? ???????? ??????? AD ? ???? ????? ???? ??????? ???? ????????., Ltd., Guangdong Yonggao Plastic Industry Development Co., Ltd., Anhui Yonggao Plastic Industry Development Co., Ltd., Ltd., Tianjin Yonggao Plastic Industry Development Co., Ltd., Chongqing Yonggao Plastic Industry Development Co., Ltd., Ltd., Taizhou Huangyan Jingjie Plastic Industry Development Co., Ltd., Zhejiang Jinnuo Copper Industry Co., Ltd., Ltd., Anhui AD Technology Development Co., Ltd., Yonggao Pipeline Sales Co., Ltd., Yonggao (Shanghai) International Trade, AD., Hunan Building Materials Co., Ltd., 1174001., 17001. ??? ?????? ?? ?????? ?? ?????? ????? ??? ???? ???? ???? ??????? ????? ????? ???? ??? AD ???? ?? ????? ???? 17399989993 ???? ??????.