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This is a lamp made up of an outer layer polished Clay liner a cement and clay middle mortar and a green metal casing out. The clay liner has a rocket design making it easier for fire to burn under pressure. The polish liner radiates back the heat centralising it in the middle thus conserving the heat.
Has a thermal efficiency of 75%.Portable can be placed on a table Lighter as it weights 12 kg uses very small piece of wood 6 inch long.
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