... come from polyurethane foam and furniture factory.Main specification:Preferred density range : 15 to 35 kg/m3Clean & dry unused ... High cube containers can loaded no less tha 20000kgsKeywords: mattress material, furniture parts, sofa materials, sponge, foams, packing box ... , foam leftover bits, foam scraps, polyurethane foam, high density foams, high elastic foams, slow rebound foams. Mattress material