KDS is one of the world's leading manufacturers of crystal oscillator. It was established in 1959 and has been 51 years old. ISO9001, ISO14001, ISO/16949 and other international system certification is KDS quality and reputation guarantee. KDS main production of temperature compensated crystal oscillator (TCXO), constant temperature (OCXO), voltage controlled oscillator (VCXO), clock oscillator (SPXO), crystal resonator (Crystal Resonators), crystal filter (Crystal Filters) and other products; its products are widely used in mobile phone, walkie talkie, GPS/ Bei Dou positioning instrument, automotive electronic system, reversing small base station, LTE, radar, laser range finder, RFID, notebook, tablet computer, digital trunking communication system, instrumentation and other fields.