???? ????? ??????? NPT/BSP - ???? ??? ?????? ??????? ???????

???? ???? Shijiazhuang Deye Piping Industries Co., Ltd. ?????? ????? ?? ?????? ??????? NPT/BSP ????? ?????? ?????? ????????? ????????. ?? ????? ?????? ??????? NPT/BSP ?????? ??? ?????? ???? ????? ????? ?????? ??? ?????? ?????? ?????? ?????? ?? ???? ??????? ?? ???? ????????? ??? ?????? ?? ???? ??????? ??? ?? ????? ?????? ??????? NPT/BSP ?????? ??? ????? ????? ????? ?????? ????? ??????? ??????. ????? ???????? ????? ???? ??????? ??? ???? ??????? ?????? ???????? ?????. ???? ??????? ??????? ???????? ?????? ???? ?????? ??????? ????? ????? ???????? ??????????? ?????? ?????? ??????? NPT/BSP ??? ?? ?????? ?????? ?? ??????? ?????????? ?????? ????????? ??????? ?????? ????????. ???? ??? ????? ??? ???? ????? ??????? ?? ?????? ??????? ?? ???????? ??????????? ?? ?? ????? ????? ???? ??? ???? Shijiazhuang Deye Piping Industries Co., Ltd. ????? ???? ??????? ?? ???????? ??????? ???? ??????? ?????? ?????? ??????? ?? NPT / ?????? ??????? BSP. ???? ??? ????? ?????? ?????? ?? ???????? ???? ???? ?? ???? ???????