تانزانيا coltan شركات التصدير من / معدن حديد فولاذ تانزانيا

e are a corporation located in Dar es Salaam - Tanzania. From our mining corporation we sell coltan containing tantalite above 30 percent of tantalum dioxide. We supply Columbite-tantalite (Coltan) with minimum levels of 30% of Tantalum to an average of 40% concentration of tantalum dioxide. Plants that give preference to refined coltan coltan which is above 35% Ta2O5. 500kg minimum order. More information. TANTALITE ORE RARE EARTH METAL 500 MT ready stock in Drums FOB DAR ES SALAAM DE