SV 121 ndi chigawo chimodzi chosindikizira chozikidwa pa silane-modified polyether resin monga chigawo chachikulu, ndipo ndi chinthu chosanunkha, chosasungunulira, chopanda isocyanate, ndi PVC.Ili ndi mamasukidwe abwino kuzinthu zambiri, Ndipo palibe choyambirira chomwe chimafunikira, chomwe chilinso choyenera pazithunzi zojambulidwa.Izi zatsimikiziridwa kuti zili ndi mphamvu zabwino kwambiri za ultraviolet, kotero sizingagwiritsidwe ntchito m'nyumba komanso kunja.