?????? ????? Bspt ??????? ?? ?????? ???????

???? ???? ??????????? ??? ?????? ???????? ???????? ?????? ????? ?? ????? BSPT ????? ?????? ?????? ??????? ????????. ????? ????? BSPT ????? ?????? ????? ??? ????? ?? ?????? ???????? ????????? ??? ???? ????? ??????? ??????? ?? ????? ??????? ???????? ?????????. ????? ????? BSPT ????? ???????? ???? ????? ?????? ??? ??????? ??????? ????? ???????? ???????? ??????? ??????? ??? ????? ??????? ?????? ??????? ????????? ?? ??????? ??????. ????? ?????? ????? ???????? ?????? ?????? ????????? ?????? ????????. ???? ??????? ??????? ???????? ?????? ?????? ???????? ?????? ????? BSPT ????? ?? ???????? ?????????? ???????? ??? ???? ????????? ???? ?????. ???? ??? ??? ???????? ?????? ?? ????? ?? ????? ?? ?????? ??????????? ??? ????? BSPT ?????? ??? ?????? ?? ????? ???? ???? ?????? ?????? ??????? ???????? ??? ?????? ?????? ?????? ?????? ????????? ?? ???? Shijiazhuang Deye Piping Industry Co.? Ltd.? ??? ??????? ?????? ?????? ?????? ????? ????? ??????? ??? ???? ????? ?????? ?? ??????? ??????