Glaze Engobe Frit LK413 & LK4139 Engobe additive for water anti-pentration glaze,suitable for wall and floor tile. GlazeEngobe Frit LK413 & LK4139Engobe additive for water anti ... kinds of ceramic raw material, including special frit for bone china, luster, printing glaze, composed frit, engobe, etc, and invested in ceramic roller ...