- Jambolink
- coltan ore, copper ore, tantalum, lead ore.
- Address:Mbagala Dar, Dar es salaam
- TRANSPACK T (1995)LTD
- Wolframite,Tungsten Ore,Tin Ore,Cassiterite,Tantalum Ore.
- Address:Bandari Road
- Jambolinks
- coltan ore, copper ore, tantalum, lead ore.
- Address:Mbagala Dar Dar es salaam Tanzania
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