ChangChun JingYu Optics Technology Co. Ltd , locate in JiLin Province of China. Our Products: Process on many kinds of glass crystal , parts of optics ,complicated lens and copy of parts of optics. Including : plane lens , sphere lens ,prism ,optical filter with some color, film-plating , process on sapphire and cylinder;crystal and calcium fluoride .reflector with metal base , sphere lens with small size diameter , minilens , cylinder lens with different base , optical wedge with high accuracy all the lens and optical parts for visible light , infared ray and laser light.