???? ?? ???? ????? ?????? ?????? ??????????
?? ???? ????? ??????? ???? ????? ???? Shijiazhuang Deye Piping Industries Co.,Ltd.? ?? ???? ???? ?????? ?????? ???? ?????? ?????? ???? ????? ?????? ?? ??????? ?? ???? ????????. ?? ????? ??? ?????? ???????? ???? ???????? ??? ????? ?? ???? ????? ??????? ??????? ??? ???? ?????? ??? ????? ?????? ????? ?????? ?? ??????? ???????. ???? ????? ?????? ????? ??????? ????? ?? ?????????? ??? ?? ??? ????? ??????? ??????? ?????? ??????? ???????? ?????? ??????? ???????? ????????? ????? ?? ???. ?? ????? ?????? ??????? ???? ????? ??? ????? ?????? ??????? ????? ??????? ?????? ?????? ?????? ???????. ???? ??? ?????? ?????? ?????? ????? ?????? ??????? ?????? ?????? ?? ???? ??????? ??? ???? ?????? ??????? ?????? ??????? ???????. ???????? ??? ???? ??? ?? ?????? ????? ???? ????? ?????? ?????? ??????? ????????? ??? ????? ???? ????? ??????????? ????? ???????? ???? ??????? ?????? ?? ???????? ?? ???????? ??????? ???? ???????? ??? Shijiazhuang Deye Piping Industries Co.,Ltd. ???? ?????? ?? ?????? ?????? ??? ???? ????? ?????? ???? ???? ???????? ??????? ??????? ?????? ???????
- ???? ????? Bspt
- ???? ???????? ???????
- ???? ??????? ???????
- ???? ????? ??????
- ???? ??? B62
- ????? ????? ?????
- ???? ??????? ???????
- ????? ??? ????. ? ????? ????? ???? ???? ??????. ? ???? ???? ?????? ?????? ????? ?????? ??????. ? ???? ????? ?? ??????? ?????? ???????? ???? ??????. ? ??? ????? ????????. ? ??????? ?????? ??????
- ???? ????? ??????? ???????
- ???? ??????? ?? ?????? ??????? ISO5211