Class A insulation materials include: inorganic insulation mortar (two-component and single-component), expanded vitrified microbead insulation mortar, inorganic high-efficiency composite insulation mortar, SF hydrophobic expanded bead insulation mortar, and FTC Phase change insulation materials, etc. Expanded vitrified microbead insulation mortar and inorganic high-efficiency composite insulation mortar are generally used for building interior wall insulation. SF hydrophobic expanded bead insulation mortar and FTC phase change insulation materials can be used for insulation projects of building exterior walls, roofs and interior walls.