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WC ???? ?????? ?? ???????? ???? ??? ??? ???? ??????? ?????? ??????? ?? ???? ??? ????? ????? ????????? ???, ?????? ?? trioxide ??????? ?? ??? ???? ??????? ?? ???, ? isomerisation ?? 2,2-dimethylpropane ?2 ?????????. ?? ???? ?????? ???? ???????? ?????? ????? ??????? ?????. 

Chinatungsten ONLINE ??? ???? ??????? ????? ???? ????? ?????? ????? ???????, ????? ??????? ????? ?????? ???? ???? ? 20 ????. ?? ?? ?? ????? ?????? ??????? ???? ??, ??? ?? ???? ????? ????? ???? ???????? ?? ??? : sales@chinatungsten.com