???? ??? A216 WCB ?????? ?? ?????? ???? ????? | ????? ????

???? ??? ?????? A216 WCB ?? ???? Shijiazhuang Deye Piping Industries Co., Ltd. ?? ???? ???? ?????? ?????? ???? ?????? ????????? ????????. ??? ?????? ????? ?? ???? WCB (??????? ???????? ???????)? ??? ???? ??????? ??????? ??????. ??? ????? ?????? ?? ????? ????????? ????? ???? ??????? ?????? ?? ?????? ????? ?????? ?????? ?? ???? ????????? ?????? ???? ????? A216 WCB ??????? ????????? ?? ????? ?????? ??????????????? ??????? ?????? ?????? ?? ???????? ???? ???? ???? ?????? ??????? ?? ?????? ????? ???????. ??? ????? ?????? ?????? ???????? ??? ?????? ??????? ??????? ????????? ??? ?? ????? ??? ?????? ??????? ????? ???????? ???????? ??? ???? ????? ??????. ?? ??????? ????? ???? ????? ????? ??????? ???????? ??? ????? ?????? ???? ???????? ???? ????????? ??????. ???? ????? ?????? ??????? ???????? ???? ???? ????? A216 WCB ????? ???? ????? ????? ?????? ???????. ???? ????? Shijiazhuang Deye Piping Industries Co., Ltd. ?????? ?????? ??? ???? ????? ???? ?????? ??? ???? ???? ?? ???? ???????