19 Acid-proof brick; Mortar powder and solution in the nature of mortar mix; three part bricklaying mortar (resin, hardener, and powder), said mortar being acid and alkaline resistant and for constructing industrial process vessels; Chemical resistant stoneware for use in industrial chemical processing plants, namely ceramic and porcelain pipe, dumped packings, liquid distributors, packing supports, hold down plates and redistributors; ceramic sumps for receiving corrosive liquids; acid-resistant resin mortar for use in the construction of vessels, tanks, and other structures; acid-resistant silicate-based mortar for use in the construction of vessels, tanks, and other structures.