????? ?????? ??????? WECO ??????? ?????? ??????? ??????

????? ?? ???? ??? ???? ??????? WECO? ??? ???? ???? ?????? ?? ???? Shijiazhuang Deye Piping Industries Co., Ltd. ???? ??????? WECO ?? ???? ????? ??????????? ??????? ?????? ?? ???? ????? ?????? ?? ??????? ???????? ?? ????? ???????? ????????. ???? ??? ?????? ???? ???? ????? ????????? ??? ???? ?????? ???? ??????. ??? ????? ??????? ????? ?? ?????????? ??? ?? ??? ?????? ?????? ????????? ?????????? ?????? ?????? ???????. ???? ???? ??????? WECO ?? ???? ????? ?????? ?????? ????? ????? ??????? ???? ???? ????. ????? ?????? ???? ????? ?????? ??? ????? ??? ??????? ????????. ?? ???? Shijiazhuang Deye Piping Industries Co., Ltd.? ??? ??????? ?????? ?????? ????? ?????? ????????. ???? ???? ??????? WECO ????? ??? ?????? ?????? ??????? ?????? ????????. ?? ???????? ???????? ????? ?????? ???????? ????? ????????.