The A component and the B component were sprayed or cast polyurea elastomer through a ħ series main engine and a GX-7 series spray gun manufactured by GUSMER, USA. The process belongs to the rapid reaction spraying system. The raw material system contains no solvent, the curing speed is fast, and the process is simple. It can be conveniently sprayed on the façade and the surface with a coating of ten millimeters thick without sagging. The SPUA technology completely breaks the tradition. The limitations of environmentally friendly coating technology have led to the rapid development of this technology.