?????? ????? API6A ????? ?????? ???????? ????? ??????

???? Shijiazhuang Deye Piping Industries Co., Ltd. ?????? ?? ????? ?????? API6A ????? ?????? ?????? ????????? ????????. ??? ????? ?????? API6A ?????? ??? ???????? ???? ????? ?????? ?????? ????? ????? ?????? ?????? ??????? ??????? ??? ?????? ?????? ????????? ?? ????? ?????? ????? ?????? ??????????????? ??????????? ????????? ?????? ?????? API6A ?????? ??? ?? ?????? ????? ?? ???????. ???????? ????? ?????? ??????? ??? ???? ?????? ??? ????? ?????????? ??????? ????????. ?? ????? ???????? ???? ?????? ???????? ???? ????? ???? ??????? ???????? (API)? ??? ???? ????????? ???????. ???????? ??? ?????? API6A ????????? ???? ????? ????? ????? ????? ?????? ????????? ?????????? ???????. ?????? ?? ????????? ??? ?????? ???? ?????? ?????? ?????? ????? ????? ?? ???? ???? ???? ??? ????? ??? ?????? API6A ?????? ?? ???? ?????? ??? Shijiazhuang Deye Piping Industries Co., Ltd. ?? ????? ??????? ?? ??????? ???????? ????? ??????. ???? ??? ????? ?????? ?????? ?? ???????? ???????? ?????? ????? API6A