51吃瓜

???????? ???????? ???? ?? ???? ??? ?? ???????? ???. ?? ??????? ?? ?????? ????? ??????? ?? ????? ????? ???? ??? ?????? ? ????? ??????. Precision Yiwei has been engaged in customized processing of precision Metal Stamping parts for 30 years. Customers can customize various precision metal spring spring spring according to their requirements. ????? ????? ? ??? ?????? ??????? ?? ???????? ??? ????? ???? ?? ????? ?????

??????? ???? ?????? ??? ?? ???? ??? ? ???? ????? ?? ???. ???? ????? ?? ???? ?? ?????? ??? ???. ?????? ???? ?? ??????? ? ???? ???? ??????? steel spring, carbon steel or high hardness stainless steel are selected. ??? ?? ???? ????? ???? ? ??????? ???? ?????? ????? ?????? ???? ???? ?????? ? ????? ???? ????? ?? ???? ??????. ??? ???????? ?????? ??? ???? ?????? ???? ? ?????? ????? ? ???? ?????????? ?? ??? ????? ???? ???? ???? ???? ?????? ???????? ?????? ??? ???????? ????? ??????? ???????? ????? ??????? ? ??? ?? ?? ??????? ???? ?? ????????? ?? ????????????? (???? ????? ????? ???? ? ??? ?? ??????? ????? ?? ????? ?? ???? ???? ??????? ???????? ??? ?????? ??????????? ??????? ???? ?????? ?????? ?? ??? ?? ????? ????? ? ?????? ????? ???? ?? ????. ????????? ?????? ?? ??????? ??????? ?? ?? ??????? ?? ???????? ????? ?????? ??????? ??????? ?? ???????? ????? ?? ??? ???? ???? ??????? ??????? ????? ??? ???? ?????? ????? ???????? ????? purple, brass, bronze ? ??? ?? ?? ???? ??????.