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???????? ??????? Jingjie ?? ????? ?????? ???? ??? ??????? ???????? AD. ????????? ????? ?? ???????? ???????? ???????? ????? AD Group Co. ? Ltd. ? ????? "AD Pipe" ?? ????? ??????? ???????? ???????? ??????? ???????? ? ???? Jingjie Pipe ????? ????? ?? ?????????? ??????? ????????. ????? ??????? ????????
Jingjie ???????? ???????? AD ??? ?????? AD ? ???? ????? ??????? ???? ???? ?? ????? ?????? ???????? ?????? ??????? ?????? ??????? ?? ?????. ?????? ???????? ??????? Jingjie ? ????? ??????? ??????? ??????? AD ? ??? ???? ???? ?? ????? ????? ?????? ?????? ????? ??????? ?????? ?? ???????? ??????? ??????? (????? ?????? ??????? ? ?????? ?????? ? ??? ??? ???).
??? ?????? "?? Jingjie Bellows ????? ?????? AD" ? ??????? ?????: Jingjie Bellows ???? ??? ????? ?? ????? AD ???????? ? ?????? ????? ?????? ?????? ??????? ??????? ????????? ?? ?????. ?? ???? ????? ??????? ???????? ? ???? AD Group ???? Jingjie ?? ???? ???? ??????? ?????? ??????? ????? ?? ?????? "Jingjie AD" ????? ??? ??????? ?????????? ?? ?????
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