?????? ????? 5A ????? ?????? ?????? ?????? ?? ?????? | ????? ????

??? ????? ???????? ?????? ?? ?? ???? ?????? ??????? 5A ????? ?????? ?? Shijiazhuang Deye Piping Industyrs Co.,Ltd. ?? ????? ??? ???????? ?????? ?? ???? ??????? ???????? ????? ??????? ?? ????? ????????? ????????? ??? ?? ??? ?????? ?????? ????????? ?????????? ?????? ??????? ???????? ?????? ?????? (HVAC). ?????? ??????? 5A ?????? ??? ?????? ?? ???? ????? ??? ??????? ??????? ????? ???????? ????????? ??????? ?????? ??? ???? ????????? ??????? ?? ??????? ??????. ????? ??? ???????? ?????? ??? ???? ?? ????? ????? ?????? ??????? ?? ?????? ????? ?? ?? ?????? ?????? ??? ????? ?? ????? ?????? ?????? ??????? ????????? ?? ?????? ?????? ?? ??????? ???????? ????? ???????? ???????? ???????? ???? ????? ?????? ??????? 5A ?????? ??? ?????? ????? ???????? ???????. ???? ???????? ??????? ???? ??????? ????? ??? ???? ???? ?????? ??????? ?? ????????? Trust Shijiazhuang Deye Piping Industries Co.,Ltd. ????? ???????? ???????? ?????? ??? ?????? ????? ???? ???? ?? ????? ?????? ??????? 5A ?????? ??? ?? ????? ?????? ?????? ??????? ????