Biomass straw briquette machine for fuel Diameter from 6mm to 75mm ... value:3700-5000 Kilocalorie Density:0.8-1.3g/cm3 Biomass straw briquette making machine Technical parameters Model GYW-75Main electrical ... recycling.Usages:Environmental protection fuel, fireplace fuel, boiler fuel, heating, biomass power plant fuel, etc Biomass straw briquette machine