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. The new model CNMC-E3 & CNMC-65 air driven proportioning unit is an advanced and compact design. It is specially aimed at the applications of polyurethane foam in place. Its particular configuration facilities easy access to all its components, simplifies the control functions and significantly reduces the maintenance work.