... of nano-titanium dioxide, whose paiticle size is below 10nm in order to make the basic material possess the special function ... lampblack, dust,etc. to make the surface of basic board keep clean for a long time. 2). Other function: air-cleaning, killing ... the bacteria and increasing oxyanion concentration, etc. 4. Using Range:1). Used for various boards, lamps, autocars, outer walls and other objects ...