????? ??? LR ?????? 90 ???? ??????? ??????? | ???? ?????? ??? ????????

????? ???? Shijiazhuang Deye Piping Industry Co., Ltd. ?????? ??? 90DEG LR ?? ?????? ???????. ?? ????? ??? ?????? ??????? ?????? ????????? ???????? ?????? ????????? ??? ????? ?????? ??????????? ??????????????? ?????? ??????? ????? 90DEG LR ????? ?? ???? ????? ??????? ??? ???? ??????? ?????????? ?? ????????? ????????. ??? ?? ?????? ?????? ???? ??? ???? ??????? ???????? ??????? ??????? ?? ????? ????? ????? ???????? ???? ????. ???? ?????? ??????? ???????? ???? ?? ????? ?????? ???? ????? 90DEG LR ????? ??????? ????????? ??? ???? ????? ???????? ???????. ??? ???? ????? ????????? ?????????? ???????? ??? ???? ?????? ???????? ?????? ???? Shijiazhuang Deye Piping Industry Co., Ltd. ?????? ?????? ?????? ????? ????? ??????. ??? ?????? 90DEG LR ???? ???? ?? ?????? ??????? ???? ?????? ?????? ?????????? ???????? ????????. ???? ??? ????? ?????? ?????? ?? ???????? ???? ?????? ????? ???????? ???????