WE ARE A WELL DIVERSIFIED GROUP OF COMPANIES ENGAGED IN INTERNATIONAL TRADING EXPORT - IMPORT BUSINESS FOR MORE THAN 7 YEARS. OUR HEAD OFFICE IS AT DUBAI AND ASSOCIATES AFRICA.WE ON TIN ORE, TUNGSTEN ORE FROM D. R. CONGO AS DISCUSSED CAN OFFER YOU WITH THE FOLLOWING SPECIFICATIONS: Ta2O5 = 0.4312 % 0.3074 0.4971% 0.967 1.960 Nb2O5 ...