???? ???? ???? SW ???? ?????? ?????? ?????? ?? ??????

???? ????? ??????? SW ?? ???? Shijiazhuang Deye Piping Industry Co.,Ltd. ?? ?? ???? ??????? ?????? ?? ?????? ?? ???? ??????? ????????. ????? ??? ?????? ???? ?????? ?????? ????? ?????? ????? ???? ?? ?????? ?????? ?????? ?????. ?? ????? ?????? ?????? ????????? ??????? ????????? ????????? ??? ???? ???? ?????? ????? ?????? ????? ?? ???? ????? ??????? ??? ?? ??? ??????? ??????? ????? ???????? ????????? ?? ????? ???? SW Reducing Ball Valve ????? ????? ??????? ??????? ???????? ??????? ??????. ??? ?????? ?????? ?????? ???????? ??? ?????? ????????? ????????. ????? ?????? ????? ?????? ??? ?????????? ??? ???? ?? ????? ?????? ???????? ???? ?????? ??????? ?????? ???????? ??? ???? SW Reducing Ball Valve ?????? ??????? ??????? ????? ?? ????????? ??? ?? ??? ????? ?????? ??????????????? ? ????? ??????. ????? ??????????? Deye ????? ???????? ????????. ??????? ?????? ?????? ?????? ???? ????????? ??????