DODGEN agricultural and forestry biomass take full price utilization and resource solution, through the whole industrial integration design of raw materials, by-products and environment to reach the integration of technology and equipment of the whole industrial chain of agriculture and forestry. DODGEN removes key impurities from copolymers through coupling of multiple separation techniques in chemical recovery, It can provide high purity monomer needed for repolymerization and greatly improve the economy of plastic chemical cycle.