1. ??? ??????? ?????? ?? ????? ??????? ?????? ?????? ? ??? ???? ??? ??? ??????? ????? ??? ??????. ???? ?? ???? ??? ??? ?????? ?? IT6 ??? 9 ????? ???????? ??????? ? ????? ?? ??? ???? ????? ??? IT5.
2. ??? ????? ??????? ??? ?? ????? ??? ????? ??????? (????????? ? ??????????) ?????? ???? ??? ??? ???? ????? ??????? ?????. ????? ???? ??????? ??? ????? ??????? ????? ? ???? ????? ????????? ??????? ??? ???? ????? ??? ??? ?????.
3. ???? ????? ???????? ??????? ??????? ??????????? ?? Shenzhen ???? ????? ??? ?????? ?????? ???????? ???? ??? ??????? ??????? ??? ?????? ??????? ????? ??????? ? ????? ??? ??????? ???? ?????? ??????? ??????? ?????? ???????? ??? ?????? ??????? ? ????? ???????? ????????? ? ??? ????? ?????? ???? ????? ??? ??? 0.001 ~ 0.005mm ? ?? ??? ?? ???? ????? ????? ?? 0.01 ~ 0.03 ??. ???????? ??? ??? ? ???? ??????? ?????? ????? ????????? ??????? ?????? ??? ????? ????? ??????? ??????? ??? ??????. 4. ???? ?? ????? ????? ????? ???????? ??? ??? ????? ?????? ?????. ??? ???? ?????? ? ????? ??? ???? ???? ?????? ????? ??? ????? ?? Ra0.16 ??? 0.63um ? ?????? ??? ?????? ???????? ?? Ra0.632.5um. ?? ????? ???? ???????? ?????? ????? ? ????? ??????? ???? ????? ????? ?????? ?????? ???? ?????.