51吃瓜

???????? ???? ????? ?? ??? ??? ???? ?? ??? ??? ???????? ???? ???????? ???????? ?? ???? ???????? ??? ?????? ?? ????? ?? ??? ???? ???. ???? ????? ???? ???? ??? ?????????? ?????? ?? ????? ?? ????? ???????? ?????? ???? ?? ??? ??? ???? ????? ?? ???? ??? ????? ?? ??. However, with fierce market competition, enterprises are facing challenges such as product homogenization and price wars. How to cope has become a important issue for automotive parts companies. ????? ???? ?? ?? ???????? ????? ?? ??????? ?? ??? ????? ?? ??? ????? ???. ?? ?? ????? ?????? ?? ???? ?????? ?? ????? ???? ?? ????? ??? ???????? ?? ????? ??? ???? ?? ????? ?? ????? ?????? ?? ????? ??? ??? ?????? ?? ????? ??? ???????? ?? ????? ?? ???? ??. ?????? ?????? ?? ???????? ?????? ??? ????? ?? improvement ??? ???? ???? ????? ???? ?????? ????? ??????? ?? ????? ???? ???? ?????? ??? ??? ??? ?????? ?? ??? ??? ???? ???? ?????. ??? ???? ????? ????? ???? ????? ?? ???? ?????? ????? ????? ??????? ???? ????? ??? ????? ????????? ??? ?????? ?? ????? ????? ????? ????? ???? ???? ???? ???? ??????? ?? ????? ?? ????? ???? ??? ????? ??????? ??? ???? ???????? ???????? ????? ?? ???? ??? ??? ????? ???? ??? ????? ???? ??. ?? ??????? ???? ?? ?????? ?? ???? ?? ??????? ?? ????? ????? ???? ?? ????? ??? ????? ???? ?? ????? ?? ???? ????? ????? ??? ?? ????? ????? ??? ?????? ?? ??????? ?? ???? ??????? ?? ???? ??????? ?? ?????? ?? ????? ??? ???? ???? ????? ???? ?? ??????? ?? ????? ???? ???????? ????? ?? ??????? ?? ???? ????? ?? ???? ??. ??? ????? ????? ???? ?? ?????? ??????? ?? ????? improving ??? ?????? ??????? ?? ????? ?? ??? ?????? ????? ??? ??? ???? ?? ???? ??? ??? ???? ??? ???? ????? ?? ???? ???? ???.