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In the production of foam, most of them adopt one-step Box-type foaming method, mixing various raw materials at high speed and quickly adding them into the forming box, the reaction of chain growth, foaming, cross-linking, curing and so on are completed in the shaped box, thus the sponge production is completed. The advantages of this process are short process flow, low viscosity, easy control, energy saving, low equipment investment, suitable material production range including industrial electric box seal ring, elastomer, electronics, an automobile, aviation, furniture, sporting goods, refrigeration, shoes, building materials. Hard bubble. Soft foam. High Bounce. Slow Bounce. Self-crusting. Filter, insulation material, steering wheel, automobile seat cushion, filler material, wire board, toy, fitness equipment, pillow, steering wheel, automobile bumper, imitation wood furniture, imitation wood frame, guide plate, instrument panel, motorcycle seat cushion, bicycle seat cushion, handrail and other industries.