The purification board, mainly calcium silicate board or fiber cement board, is sprayed with uv fluorocarbon coating to achieve antibacterial and cleaning effect. Fluorocarbon topcoat can be used for exterior wall due to its good weatherability, but it is mostly used for interior wall decoration.

Generally, DPX inorganic color-coated board is used for external walls to achieve better weather resistance and self-cleaning performance.

This is what inorganic prefabricated panels look like.