Coltan, tantalium, tantalite.
Coltan.
Raw material tin (sand ) ore.
Minerals.
Coltan, tantalium.
Nano copper / copper concentrate.
Coque mineral roca fosforica, and other minerals.
Chemical like bnenzene, aromatic c9, cumene, 3 ethyl toluene, 2 ethyl toluene.
Coal, copper, barite, coltan.
Minerales.
Mineral.
Minerals.
Graphite Powder and Carbon Powder.
Industrial minerals, graphite electrodes, graphite specialties, ferroalloys, primary aluminium, chrome ore, tantalite ore, antimony ore, sulfur, barite, calcium carbonate.Trading, sales agent, purchasing agent
Natural gilsonite.
Copper concentrate.
Gemstones, manganese ore, tantalite.
Manganese, barite, copper, coltan, coal.