CST (formerly A.O. Smith) First found out the methodology of controlling corrosion by fusing glass to steel in the 1930s. The technologies was initially Utilized in the brewing and sizzling water heater industries. CST makes sure VITRIUM�?TiO2 and EDGECOAT® II Technology is used on every glass fused to steel storage https://www.pinterest.com/pin/993958580252147039/