?????? ??????? DNV GL ???????? ????????? ????????

??????????? ??? ???????? Idndustrys Co.,Ltd. ????? ?????? ?????? ?? ?????? ??????? ????? ?????? ???????? ?? ??? DNV GL. ?? ????? ?????? ??????? ?????? ??? ?????? ??????? ???? ??????? ???????? ??? ????? ??????? ?????? ?? ????????? ???????? ????????? ???? ????? ?????? ??????? ???????? ?? DNV GL ???????? ???? ?????? ?????????? ??????? ??? ???? ?????? ?????? ????????. ????? ??? ???????? ?? ?????? ?????? ?? ??????? ???????? ????? ?????? ????????? ??????? ????????? ?????? ?????? ???? ???????? ????? ??????? ??? ?? ?????? ??????? ?????? ??? ???? ??????? ????????. ???? ???????? ???????? ?????? ??????? ?????? ??????? ??? ??? ???????? ?????? ????????? ?????? ?? ?????? ??? ????? ?????? ??????????? ??????? ??????. ?? ???? Shijiazhuang Deye Piping Idndustrys Co.,Ltd.? ??? ??????? ?????? ??????? ??? ???: ???? ?????? ?????? ?????? ?? ??????. ???? ??? ????? ?????? ?????? ?? ?????? ??????? ???????? ?? DNV GL ???? ???? ?? ???? ???????