- Exportale
- copper, manganese, tantalite, columbite, rare earth.
- Address:Avenida Irai 300 - 508, Sao Paulo, Sao Paulo, Brazil,04082000
- World Mineral Broker
- iobium, cooper, cassiterite, columbite..
- Address:Av Augusto de Lima 1376 suite 908, Belo Horizonte, Minas Gerais, Brazil,30190-003
- STA International Limited
- Quartz,Imperial Topaz,Columbite,Tourmaline,Alexandrite,Gemstones, Steel Raw Material, .
- Address:Rua Bambui, 539
- White Solder
- Tantalum, Niobium (Columbite) and Tin Ingots..
- Address:Rua Peru, 1752
- Prosper Mineiracao Comercio Importacao E Exportacao Ltda
- minor metals, ore, tantalite, columbite.
- Address:Republica do Libano,61. Rio de Janeiro Rio de Janeiro 20061030 Brazil
- Marcassa Comercial Ltda
- ore of manganese, copper, tantalite, columbite, coltan, titanium, tantalum, niobium.
- Address:pedro paulo conceicao Qd M Lt 22 814 cs 04, Lauro de freitas, Bahia, Brazil
- Bealay Trade
- columbite, niobium, and alloystrading services.
- Address:Brazil
- ExcelMinas Industria Com Imp & Exp Ltda
- Tantalite Ore,Columbite Ore,Tin Concs,Lead cons,Mn containing Cobalt.
- Address:Rua Gen Izidoro Dias Lopes, 512
- TERRAS RARAS
- tantalite, columbite, titanium, copper, zinc,MINERALS.
- Address:rua luiz dalincourt 400
- Prosper mineracao
- tantalite,columbite,minerals.
- Address:Republica do Libano
- Primex
- columbite.
- Address:Brazil
- PRIMEXIMPEX
- COLUMBITE.
- Address:
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