For the body frame, material combination of steel tubes and polymers was adopted, thus making it have the characteristics of high strength, strong corrosion resistance, easy operation, quick and convenient assemble, hard-wearing; working life could be up to more than 10 year. It is optional to adjust the layer distance and thus convenient for mulberry leaf feeding, litter cleaning and especially automatic cocooning. Specifications: 2.65*1.55 (m). Configure: bamboo curtain, tablecloth, silkworm net.