???? OEM DIN BS: ???? ???????? ?? ??????? ???????

??? ????? ???????? ????? ???????? ???? ?? ??????? DIN BS ???? ?????? ???? Shijiazhuang Deye Piping Industries Co., Ltd.. ????? ????????? ????? ?????? ?????? ????????? ??????? ????????? ????????? ??? ???? ??????? ????? ??????? ?? ?????? ??? ???????? ????????? ???????? ??????. ????? ????? ??????? DIN ?BS? ?????? ????????? ??????? ?????? ?? ??????? ??????? ????? ??????? ?????? ????????? ??????? ???????. ???? ??? ????? ??? ??????? ???? ??????? ?? ?????? ?????? ?? ?????? ?????? ???? ?????? ??????????. ?? ???? Shijiazhuang Deye Piping Industries Co., Ltd.? ??? ???? ?????? ???? ??????? ?? ?????? ?????. ???? ????????? DIN BS ???????? ????? ??????? ?????? ????? ???????? ???????? ??????? ???????? ?????? ???????. ???? ???????? ??????? ?????????? ????? ?? ??? ?? ?? ?????? ????? ????? ???????? ????? ????? ?????? ???????? ?????? ??? ???? Shijiazhuang Deye Piping Industries Co., Ltd. ?????? ??? ???? DIN BS ????? ?????? ???? ???? ???? ?????? ??????????