?????? JIS Air Vent ??????? - ???? ?????? ????? ??????

????? ?? ???? ??? ???? ????? JIS? ??????? ???????? ?? ??? ???? Shijiazhuang Deye Piping Industries Co., Ltd. ???? ???? ??????? ??? ?????? ??????? ?????? ??? ????? ?????? ???? ???????? ????? ??. ???? ????? JIS ?????? ??? ?????? ?? ???? ????? ??????? ??? ???? ??????? ??????? ???? ?????. ??? ????? ?????? ?????? ???????? ?????? ?? ?????? ???? ????? ??? ???? ?????? ???? ????? ???? ???????? ???????? ??? ??? ?????? ???????. ?????? ?????? ?? ?????? JIS? ??? ???? ???????? ????????. ??? ??? ???????? ????? ?????? ?????? ???????? ????? ?? ????? ???????? ????????. ?? ???? Shijiazhuang Deye Piping Industries Co., Ltd.? ??? ??????? ?????? ?????? ????? ?????? ???? ???????? ???????. ???? ????? JIS ?????? ??? ???? ????????? ??? ???? ????? ???????? ??????. ??? ??? ??? ?? ???? ????? ????? ???? ????? ???????? ????? ??.