polyurethane sealant 1.new material alternative for wood,plastic,metal 2.durable, enviromental 3.light in weight, cost save

polyurethane sealant/polyurethane foam/pu axletree/pu foam part/pu accesory1.new material alternative for wood,plastic,metal2.durable, enviromental friendly3.light in weight, cost save

polyurethane sealant/polyurethane foam/pu axletree/pu foam part/pu accesory