Cheap Portable Polyurethane Pu Spray Foam Machine For Wall Roof Tank Container Insulation is used to spray coating two-component liquid materials for Exterior Interior wall, Roof, Tank, cold storage spraying insulation. It can be used for various construction environment with spraying a variety of two-component spray materials and has been widely used in embankment waterproof, pipeline corrosion, auxiliary cofferdam,tanks, pipe coating, cement layer protection, wastewater disposal, roofing, basement waterproofing,industrial maintenance, wear-resistant linings, cold storage insulation, wall insulation and etc.