???? ????? WCB ???? ?????? ????????? ???????? | ????? ????

???? Shijiazhuang Deye Piping Industry Co., Ltd. ?????? ?? ????? ?????? ??????? ????? ??????? ??? ?? ??? ???? ??????? WCB. ?? ???? ??????? WCB ????? ??? ????? ?? ???? ????? ?????? ??? ???? ????? ??????? ?????????? ???? ????? ?? ????????? ???????? ????????? ??? ?? ????? ???? ??????? WCB ???? ?????? ???? ????? ?????? ?????? ??????? ???? ??????? ?? ??????? . ???? ?????? ?????? ????? ??????? ??????? ?????? ??????? ??? ?????? ?????? ????????? ?? ?????? ????? ?????? ??????????????? ?????? ??????. ????? ???? ??????? WCB ????? ??? ?????? ?????? ???????? ??? ?????? ??????? ??????? ???????. ??? ?? ??????? ???????? ????? ???????? ??????? ????? ?????? ???????? ?? ????? ?? ?????? ??????? ?? ???????? ????? ???? Shijiazhuang Deye Piping Industry Co., Ltd. ?????? ??????? ??????? ?? ?????? ?????? ????? ?????????. ???? ??? ?????? ??? ???? ?? ????????? ??? ???? ??????? WCB ??????? ???????? ??????