KDS Co., Ltd. (KDS, trademark) is one of the world's leading crystal oscillator manufacturers. It was founded in 1959 and has a history of 51 years. International system certifications such as ISO9001, ISO14001, ISO/16949, etc. are the guarantee of KDS's quality and credibility. KDS mainly produces temperature compensated crystal oscillators (TCXO), constant temperature crystal oscillators (OCXO), voltage controlled crystal oscillators (VCXO), clock crystal oscillators (SPXO), crystal resonators (Crystal Resonators), crystal filters (Crystal Filters) and other products; its products are extensive Used in mobile phones, walkie-talkies, GPS/Beidou locators, automotive electronic systems, reversing radars, small base stations, LTE, RFID, laser rangefinders, notebooks, tablets, digital trunking communication systems, instrumentation and other fields.