... Raw material: straw,, sawdust, rice husk, seed shell, palm fiber, corn straw, alfalfa, and other biomass waste material.Introduction:Biomass fuel ... -1.4g/cm3Weight1300kg1500kg1800kg2000kgCalorie: 3500-5500 Definition: straw coal refers to corn straw, wheat straw, cotton, straw, husk, groundnut shell, corncob, branches ...