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2.??????? ?? ?????? ?? ??? ??????????, ??? ????? ?????, ????? ??? ?- pH ?? ????? ?? ??? ????? ???????????, ????? ?? ????? ??? ???? ????? ???? ???????.
3.???? ?? ?????? ???? ????? ?????, ????? ??????????? ???? ?? ?????? ????????? ????. ??? ?? ????? ?????? ?? ??? ??????? ??????? ????? ?????, ????????? ????? ??? ??? ????, WO3 ????? ???.
?? ?? ?? ????? ??????? ???????, ?? ???? ????? ????? ????"?: sales@chinatungsten.com?? ??????: +86 592 5129696.
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