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???? BS1400 LG2 ???? ????? ???? Shijiazhuang Deye Piping Idndustrys Co., Ltd. ?? ???? ???? ?????? ???? ???????? ?????? ??????. ??? ?????? ????? ?? ???? ????? ??????? ??????? ??? ????? ??????? ????????? ?? ????? ??????. ????? ???? BS1400 LG2 ????????? ????? ???????? ??????? ??? ????? ???? ?????? ?? ??? ??????? ?????? ???????? ????????. ??? ???? ????? ????? ?????? ????? ???????? ??? ????? ??????? ????????? ?? ????????? ??????. ??? ?? ????? ??? ?????? ?????? ??????? ????????? ??? ???? ?? ??? ?????? ?? ????? ??????? ??????? ?????????. ???? ????? ????? ??????? ??????? ????? ????? ???????? ??? ??? ???? ???? ????? ???????? ?????? ???????. ???? ???? Shijiazhuang Deye Piping Idndustrys Co., Ltd. ?????? ?????? ????? ?????? ??? BS1400 LG2? ?????? ????? ????? ???? ??? ???????. ?? ???????? ??????? ???? ???????? ??? ???? Shijiazhuang Deye Piping Idndustrys Co., Ltd. ?? ???? ????? ?? ????? ???????? ????????