?????? Unc ??????? ?? ????? ??????? ??????? - ???? ??????? ??? ????????

??? ???? ???????? Unc Bolt ?? ???? Shijiazhuang Deye Piping Industries Co., Ltd. ?? ????? ??? ?????? ???? ?????? ?????? ????? ???????? ?????? ?? ???? ???? ??? ???? ??????? ?????? ??????? ?? ??????. ??? ????? Unc Bolt ????? ??? ???????? ???? ????? ??????? ??? ???? ??????? ??????? ???? ????? ??? ?? ???? ????????? ??????. ???? ?????? ???????? ????? ?????? ??? Unc Bolt ????? ??? ????? ??????? ????? ???????? ?????? ???????? ?????? ??. ???? ??? ???? ?? ????? ???? ?? ????? ?? ?????? ??? Unc Bolt ????? ??? ?? ???? ?????? ????? ???????? ????? ???????? ?????? ??. ??? ????? ?????? ???????? ?????? ?????? ??????? ???????? ????????. ?? ???? Shijiazhuang Deye Piping Industries Co., Ltd.? ??? ??????? ?????? ?????? ????? ?????? ?????? ?????? ???????. ?? ?? Unc Bolt ?????? ????????? ?????????? ???? ????? ???? ????? ?? ????? ???????? ?????? ??