???? ??????? GGG40 ?? ???? ???????? ?????? ?? ??????? | ????? ??? ???????? ????

?? ???? ??????? GGG40 ??????? ?? ???? ???????? ???? ????? ???? Shijiazhuang Deye Piping Industries Co., Ltd. ?? ???? ????? ???? ?????? ???? ?????? ?? ?????? ?????? ???????? ?? ????? ???????? ????????. ????? ?? ???? ???? ???????? ??????? GGG40? ???? ??????? ??? ????? ????????? ?? ????? ??????? ?????? ?????? ?????????? ???????? ??????? ?????? ?????? ?????? ???? ???? ???????? ????? ??????? ?????? ?? ??????. ???? ???? ?????? ????? ??? ?????????? ??????? ???????? ??????? ??????? ??? ????? ???? ?????? ????? ????? ??????? ????????. ?? ????? ?????? ????? ???????? ??????? ???????? ?????? ?????? ????? ?????? ??? ???? ??????? ?????? ?????? ?? ????????? ????????. ???????? ??? ????? ??????? ????? ???? ??????? GGG40 ??????? ?? ???? ???????? ?? ?????? ?? ??????? ??????. ??????? ?????? ??????? ??????? ???????. ???? ?? ???????? ?? ????? ?????? ??????? ?? ????? ???????? ??????????? ?? ????? ??????? ???????? ?????? ?????? (HVAC)? ??? ??? ?????? ???? ????? ??????? ????? ????????? ?????? ???????? ????????