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（1）?????? ??????? ?? ??????, ????? ??? ?? ??????? ??????? ????? ?? ????? ?????? ??????? ??? ????? ?????? ?????. ????? ??? ????? ????? ?????????, ?????? ?????? ??????. ??? ?? ????? ?? ???? ????? ???? ???????. ???????, ??????? ?????? ???? ??????? ? ??????? ?????? ??????? ??? 1mg / m, ???? ?????? ?? ??????? ??????? ??? 5mg / m. ???????? ?????? ????? ??? ??? ????? ??????, ?????, ??????? ???? ?? ??? ??? ??? ????? ????? ???. ?? ??????? ?????? ???? ????? ???? ?????? ?? ?????? ?????? ??????.
（2）?????? ??????? ?? ????? ???? ??????? ?? ???? ??? ????. ????? ????? ??????, ????? ??? ?? ????? ?????? ??????? ????? ?????? ????? ????? ?????, ???, ?????, proteinuria. ????? ?????? ??????? ???? ????, ??? ?? ????? ?? ??????? ?????, bentine pentafluoride, trifluoride ???? ?????? ???? ?????? ??????.
?? ?? ?? ????? ?????? ???????, ?? ???? ????? ????? ????"?: sales@chinatungsten.com?? ??????: +86 592 5129696.
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