???? OEM ??????? ????? API 600/API 6D ??????? ?? ???? ????? ??????

???? ????? API600/API 6D ?????? ?? ???? Shijiazhuang Deye Piping Industry Co.,Ltd. ?? ???? ???? ?????? ?????? ?? ???? ????????? ?? ?????? ????? ?? ????????? ???????????????? ?????. ????? ??? ???????? ????? ??????? API? ??? ???? ????????? ????? ?????? ?????? ???????. ???? ??????? ??????? ?????? ?????? ??????? ????????? ????? ???? ??????????? ??? ?????? ???????? ???????? ?????? ??? API600/API 6D? ??? ?????? ????? ?????? ????? ?????? ??? ????? ???? ????? ?? ??????? ??????. ????? ??? ???????? ??????? ?????? ?? ?????? ???????? ???????? ????? ?????? ?????????? ??????? ?????? ???????? ??????????. ???? ??? ???? ?? ???? ????? ?????? ?? ?????????????? ?? ?????????? ?? ????? ??????? ????? ?????? ????? ???????? ?????? ????? API600/API 6D ?? ???? ??????????? ??? ?????? ???????? ????????. ???? ?????? ??????? ?????? ????????? ??????? ????? ??? ???????? ???? ?????? ????? ????? ????? ????? ???????? ????????.