A water-based coating composed of inorganic binders, nano-zirconia (UG-R30), nano-titanium oxide, and nano-alumina—ideal for equipment/facilities needing thermal insulation. For quality: clean substrates to Sa2.5 (St3 for repairs), 25–40μm roughness; mix A:B=94:6 (mass) with mechanical stirring, add water to adjust viscosity. Spray twice (1mm nozzle) at ≥5℃, ≤85% RH, 2nd coat after 1st surface-dries.