It is used as the floor primer or intermediate layer for cement and concrete floors that require resistance to chemical solvents such as strong acids, strong solvents, strong oxidants and salts. It is especially suitable for the floor system in areas with super anti-corrosion (such as laboratories, auto parts factories, PCB factories, petrochemical plants, electronics factories, metallurgical plants, textile mills, power plants, etc.), and is used for the construction of processes such as priming, pasting fiberglass cloth or chopped strand mat, sand scraping and putty scraping.