Stemmerich provides glass manufacturing and fabricating services for the optical, industrial, and process equipment industries. They offer a wide range of glass products including optical flat glass, glass tubing, gauge, and rod. Stemmerich specializes in cutting, machining, edging, tempering, glassblowing, laminating, and screen printing services. They also provide glass piping solutions such as W.I.N.S.® and custom sizes. Stemmerich's expertise extends to materials like Corning Gorilla Glass, Schott Borofloat 33®, Quartz, Fused Silica, and more for various applications in different industries.