(1) ???: (???? ???????? ?? ?????? ????, ??? ???????? ??????? ???? ??? ??? ??? 45°, ??? ??????? ??? ??? ???? ?????? ?????? ?? ????????? ???????????, ????? ????????, ??????, ??? ??? ??? ???)
(2) ??? ???? ????????? ???????? ???? ????????um ???????? ??? ?? ???? ?????????? ?? ????? ?? ?????? ?????????, ???? ???? ??? ?? ????? ??? ??? ????? ??????????????. ??? ??? ???????? ?????, ??? ??? ?????????? ????? ??? ?????????? ??
?? ???? ???? ??? ?? ?????? ?????????????? ????? ????????????????????? ??? ????????um??????????.
Emma Technology Co., Ltd. ??? ?????? ??? ?? ????????? ?????????????? ??????????? ??? ???????????? ???? ????? ??? ????, ???? ??? ????????? ??? 2006. ?? ????em? ?????? ?????? ??? CNC ????????????, ???? ????????? ?????, ??? Sheet Metal Processing.