????? NPT Y ????? ?????? ?????? ????? | ???? ????!

??? ?????? ?????? ????? NPT Y? ???? ?? ??????? ???????? ?? ??? ???? Shijiazhuang Deye Piping Industries Co., Ltd.. ??? ?????? ????? ?????? ??????? ??? ???????? ?????????? ???????? ??????????? ?????? ?? ???????? ??????? ??? ??????? ???. ????? ????? NPT Y ???? ??? ??? ??? Y ?? ???? ?? ??????? ??????? ????? ????? ??????? ???? ??? ????? ?????? ?????? ?? ?????? ???????? ??? ???? ??????? ????? ???? ??? ???????? ????????? ????? ????? NPT Y ?????? ??? ?? ?????? ?? ??????? ??????? ???? ??????? ??????? ??????. ???? ?????? ????????? ?? ?????? ??? ????? ?????? ??????????????? ??????? ?????? ??????. ?? ?????? ?????? ??????? ??????? ?? ?????? NPT Y ?????? ??? ?????? ???? ?????? ?? ??? ??????? ?????? ??? ????? ?????? ????? ???????? ?????? ??? ?? ???????? ??????? ???? ???????? ??? ???? Shijiazhuang Deye Piping Industries Co., Ltd. ???? ?? ?????? ???? ?????. ???? ??? ????? ?????? ?????? ?? ????? NPT Y ???? ???? ?? ???? ???????