Screen Recircles International Ltd by physical technology, using bionic technology to change the physical structure of polymer materials, the formation of internal structuresimilar to that of natural porous. Screen Recircles International Ltd the use ofnanotechnology activated polymer air power sensitivity, so the screen material has the characteristics of micro electricity in the air, air pressure and temperature in the shockeffect of weak variation of discharge, the air ionized air molecules are negatively charged,negatively charged air molecules called negative ion, oxygen molecules the negative isnegative oxygen ion, the air negative ion material in the air under the action of Everfount tospace for the release of negative oxygen ions, so that the formation of negative oxygenrich space. To create the world's first environmental protection level projection screen.