High transparency and gloss: nano particle size between 1 ~ 100nm, less than the wavelength of visible light, less impact on transparency film. Products applicable to, membrane switch, electrical lines, motors, electric polyester film photovoltaic manufacturing repair insulating polyester film deposition, printing, reinforcement, shelter, pet reflective polyester film cutting, diffusion, protection, release double-sided tape, box, insulation materials, film sensor switch, printing, electronics, tag, paper skylights, FPC.