Low expansion materials have a long range of applications, such as Optical Flat, Optical Mirror Blank, large Telescope Mirror Blank, Custom Lightweight Blank. MG-Optics obtains the outstanding process techniques in producing custom lightweight blank, which can not only be machined per the specific drawings, but also the lightweight design with a maximum size of 1500mm. Materials include ULE(corning 7972) and Zerodur, Schott. If you are interested with our products, Just send us your drawings or specifications, we will begin preparing a quotation for you. Contact with our professional technician engineer now!