Cassiterite (Tin), Tantalum And Tungsten..
Columbium tantalite (coltan).
Machinery, furnitures, minerals, coltan, tatanium-neubiam, wolfram, casterite-iron, tin.Machines, advanced materials and agrochemicals inspections
Tantalum, Tantalite, Coltan.
Wolframite, coltan, tin.
Copper ore and cobalt like coltan, tin, wolfram, ferro titanium, bitumen, d2 gas, manganese ore, bauxite, bonny light crude oil bauxite ore,clinker , aluminium ingots, brazil sugar and coffee, lead ingots and zinc ingots iron ore , steel billets.