Chongqing Zhaohong Technology Co., Ltd. specializes in the precision manufacture of super-hard materials, such as synthetic sapphire and ruby, ceramic, and industrial glass. The production is strictly controlled by ISO9001:2000 system. We provide high precision components for various industrial markets worldwide. Our company has independent right of Import and export. We serve both domestic and overseas markets extensively. We specialize in sapphire and ruby bearings which are widely used in water meters, flowmeters, air and gas analyzers and monitors, medical OEM business, detectors and pressure cells, photodiodes and bar code readers. We are capable of manufacturing multifold optical components of high precision, like windows, prisms and rods in sapphire, ruby and many glass materials, such as BK7, F5 and B270 series.