???? ????? Api602 ???? ?????? ????????? ????????

????? ???? Shijiazhuang Deye Piping Industries Co., Ltd. ?????? ???????? ??????? Api602? ??????? ?????? ???????? ????? ?????? ?????? ??????? ???????. ??? ????? ???????? ???????? ????? ????????? ??????? ?????? Api602? ??? ???? ?????? ??????? ?? ???????? ?? ??????? ?????? ??????? ?????? ???????? ???????? Api602 ?? ?????? ?? ???????? ???????? ?????? ???????? ??? ?? ??? ??????? ????????? ???????? ??????? ?????? ?????? ???????? ?????? ????????? ??????? ??????? ????? ?????? ??????????????? ?????? ??????. ????? ??? ???????? ?????? ???? ????? ???????? ??????? ???? ?? ?????? ?????? ?? ?????????? ?? ??????? ??? ?????? ??????? ???? ???????? ????? ???? Shijiazhuang Deye Piping Industries Co., Ltd. ?????? ?????? ????? Api602 ?? ?????? ?????? ???? ???????? ???????. ??????? ?????? ???????. ???? ??? ????? ?????? ?????? ?? ???????? ??????? ?? ???????? ???????? ???? ???? ?? ???? ???????