Is 2012 may 18-20, sponsored by the China Animal Husbandry Association of the tenth (2012) China animal husbandry exhibition was held in Nanjing International Expo Center, the third China International Biomass Energy Expo and the third China biogas industry international cooperation forum also held in the same period. The organizers of the German Agricultural Association, the China Animal Husbandry Association to create a biomass energy exhibition of the feast, attracting from Japan, South Korea,