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Chiantungsten ??? ?????? ?????? 100 ???? ??????? ???? ???? ? -20 ???. ?? ??? ????? ????? 100 tungsten ???? ?? ???? ?????, ???? ??????? dart bart, ???? ??????? dart, ??? ???, ???? dartboard ? dartboard.

???? ??? ???? ???? ???????, ??? ???? ???? ?? ????? ??????? ???? ???? ??????? dart.
????, ???? ????? ? 100 ???? ???? ??????? ?? ?????, ?? ???, 100 ???? ??????? ???? ???? ??? themanufacturing ????? ??? ???? ???? ???? ??????? ???????. ???? 100 ???? ??????? ??? ??????? ????, ????? ?????? ??????? 100% ???? ???? ?????. ?? ?? ????? ?? ???? ??????? ???? 100% ??????? ??? ?? 100% ??????? ????? / ???? ??????.

?? "???????" ???? ??? ???? ????? ?? ????? ???? ??????? ???????, ???? ???? ???? ???????, ???? ?? ????, ????? ??? ??? ???? ???. ?? ??????? 80% ??? 20% ???? ??. ??? ???? ???? ???? ??? ???? ??? 70% ? 95%.

??? ??????? ??? ????? ?? ???????? 80% ???? ?? ????? ?????? ????? ?? ??? ?? ???? ??? ????. ?? ??? ???? ???? ????? ????, ??? ???? ????? 90 ???? ???????, ?? 95 ???? ???????. Chinatungsten ???? ????? 100 ???? ??????? ?????.