Applied in home cabinet lighting (kitchen, bathroom), ceiling cove lighting, bedroom ambient lighting, and TV background wall lighting. Custom-structure diffusers with snap-on design enable easy DIY installation; high-transparency models provide sufficient illumination for functional areas (e.g., kitchen countertops), while frosted custom diffusers create warm, soft ambient light for living rooms and bedrooms. Food-grade materials ensure safety for indoor use, with no harmful substance release.