Delux Metal Processing Chemicals [P] Ltd offers Quenching, Marqueching and Tempering Salts and Oils. Delux Metal Processing Chemicals [P] Ltd supplies Heat Treatment Salts and a wide range of metal processing chemicals. The Quenching, Marqueching and Tempering Salts and Oils are used for quenching and tempering high speed steel, austempering etc and works in temperature ranging from 150°C to 700°C.