1.High mma polycarbonate (PC) siri ike ma dịgidere2.Humanized imewe, nhazi ákwà mgbochi, ngbanwe n'efu.3.UV na-eguzogide High okpomọkụ na-eguzogide4.Thickened Pc mpempe akwụkwọ Ndụ ọrụ 10+ afọ