????? ?????? PVC ??????? ?????? ????? ???????? ????? ??????

?????? PVC ?????? ??? ?? ???? ???? ?????? ????? ???? Shijiazhuang Deye Piping Industry Co., Ltd.? ??? ????? ?????? ????? ????? ???? ??? ?????? PVC ?????? ??????. ?????? ????? ?? ???? PVC ?????? ??? ???? ????? ??? ???? ??????? ????????? ????????. ???? ?????? ?????? ????????? ??? ?????? PVC ?????? ??? ?????? ?????? ??????? ???? ????? ????? ??????? ???????. ??? ??? ???????? ??? ????? ??????? ?????? ??????? ??????? ????????? ??? ?? ????. ???? ??????? ??????? ?????? ??????? ?????? ??????? ?? ??????? ??? ???? ???? ????? ????????. ?? ???? Shijiazhuang Deye Piping Industry Co., Ltd.? ??? ???? ?????? ???? ??????? ?? ?????? ?????. ??? ????? ?????? PVC ?????? ??? ???????? ????????? ?????? ???????? ????? ??????? ?????? ?????? ???????? ???????. ??? ??????? ?????? ???? ?????? ?????? ?????? ?? ??? ??????? ????????. ???? ??? ????? ?????? ?????? ?? ?????? PVC ?????? ??? ????????? ??????.