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About us: We are a professional manufacturer and exporter of Vanadium Pentoxide , Ammonium Metavanadate,ammonium polyvanadate and vanadyl sulfate in China.We are professional manufacture vanadium pentoxide 98% and 99%, 99.5% and 99.9%. The commodities we are handling consist of best quality, reasonable price and prompt delivery, thus we are able to offer a carefully selected and complementary program of functional raw materials.