Semi transparent frit: it's semi transparent frit, can be applied to colorant decoration on enamel cover coat. decal transparent frit: it is a good transparent frit, for colorant decoration on enamel cover coat. anti acid transparent frit: it's anti acid transparent frit, can be applied to colorant decoration on enamel cover coat. direct on frit An iso 9001:2001 certified ceramic frits manufacturer, ferro follows stringent guidelines for our supplier selection, frit technology and technical service standards. we offer both leaded and no lead frit varieties available as transparent frits, glossy frits and matt frits designed specifically for double fast firing, single-fired monoporosa ... Enamel frits ground frit cover frit transparent frit direct on frit cast iron frit other frits; boron product boron carbide borate fertilizer borax boric acid boron oxide; carbonate salts lithium carbonate barium carbonate magnesium carbonate; Features:high transparent; wide range of firing temperature; used for interior and outer wall tile ,belt line. company profile zibo yishun ceramic pigment & glaze co., ltd.was founded in 1999 which is located in zibo city, capital of ceramics and the biggest manufacturing base of architeetural ceramic.