????? ?????? ????? EPDM OEM ????? ????? ????? ??????

????? EPDM ?????? ???? ???? ?????? ???? Shijiazhuang Deye Piping Industry Co., Ltd.? ?? ?? ???? ?????? ???? ?????? ???? ?????? ???? ???? ????? ??????. ?????? ?? ???? ??????? ???????? ???? ?????? (EPDM)? ??????? ?????? ??????? ?????? ???????? ??????? ?????? ??? ?????????? ??? ?????? ?????? ?????? ????????? ???????? ?????????. ???? ????? EPDM ??? ?????? ????????? ?? ????? ????????? ??? ???? ?????? ?????? ????? ??????? ??????? ??????????? ??? ???? ??????? ????? ??????? ?? ??????. ???? ??? ???? ??????? ????????? ???? ?????? EPDM ?????? ??? ??????? ?????? ?????????? ??? ????? ??? ????? ????? ?? ????? ?????? ???????. ?? ???? Shijiazhuang Deye Piping Industry Co., Ltd.? ??? ??????? ?????? ?????? ????? ??????? ?????? EPDM ?????? ??? ???? ????????. ?? ????? ????? EPDM ?????? ??? ???????? ?????? ?????? ??????? ???????? ????? ????? ?????? ??????????? ??? ?????? ?????? ?????? ?????????? ?? ?????.