In applications, fiber-reinforced calcium silicate boards for construction, due to their features like lightweight, non-flammable, thermal insulation, minimal dimensional change in wet conditions, and good workability, can be used as composite wall panels and lightweight partition panels under various conditions. They are particularly suitable for interior and exterior panels of composite walls, partition panels in public and residential buildings, as well as suspended ceilings and ceilings. Additionally, they can also save costs and reduce maintenance fees in the long run.