We are Changchun Deheng Optics Co.,Ltd in china(used to be Changchun DaHeng Optical Instrument Co. ).We would like to introduce ourselves to you as a partner. Our company specializes in processing high-quality optical components like prism,mirror, wedge prism,Paraboloidal mirror,windows ,lens, plano-cylindrical lens, diffraction grating ,etc. Our technique comes from Changchun Institute of Optics & Fine Mechanics and Physics belonging to Chinese Academy of Science. We can manufacture optical components with all kinds of optical glass or optical crystal meterial(calcium fluoride, silicon wafer). The quality conform to European Quality Standard.The ability can be up to : surface quality 10~5, Fringes 1/20~1/30, Dimension 2.0mm¡ª600mm.