... small in size, better combustion, capable as the substitute for the superior coal or firewood. This bio- ... market, for it is capable as the substitute for the superior coal or heavy oil to ... marketing. The briquettes can be used as a substitute of any fuel in following fieldsBoilers : It can ... 1000d/cel.)Brick Kilns It is the total, substitute of steam coal.Residential & Commercial Heating For winter ...