SPUA-102 and SPUA-406 are third-generation polyurethane elastomers that are sprayed on-site from semi-prepolymers, end-amino polyethers, and amine extenders. This technology organically combines new materials, new equipment, and new processes. It is a revolutionary leap forward in traditional construction technology and is currently the most advanced construction technology in the world. Both products have fast curing speed, insensitivity to moisture and temperature, good thermal stability, 100% solid content, no VOCs, no pollution, environmental friendliness, good physical properties, good adhesion to concrete substrate, no joint coating, excellent waterproof performance, high elongation, no cracking after cold and heat alternation, good weather resistance, no powder, no discoloration, and are mainly used in sports field grandstands, roofs of high-end buildings, industrial factories, cold storage vapor layers, reservoirs, bridges, tunnels, underground engineering, power plants, cooling towers, waste/wastewater treatment tanks, aquariums, Swimming pool lining and other fields.