Furthermore, straw is classified as a type of biomass material that typically includes maize stalks, wheat straw, and similar components. Historically, straw was regarded solely as waste, primarily suitable for animal feed. However, advancements in technology have enabled the production of valuable materials from discarded straw. For example, a straw charcoal machine and associated te... https://keronebiochar.com/straw-charcoal-machine/