With an ultra-fine average particle size of 5nm, it self-disperses in pure water (no stirring) to form uniform nano-coatings on furniture/walls for indoor air purification. It efficiently captures and degrades formaldehyde, benzene, ammonia, etc. 100g suits 100m² buildings (adjust by pollution level). Note: use 0.5–1mm spray guns for dark/high-gloss furniture; avoid metal surfaces; wear PPE; keep proper spraying distance; clean equipment post-use.