Guangzhou Tianma Telecom Technology Co., Ltd.   

The predecessor of the company is Chinese Putian Guangzhou Post's wholly-owned subsidiary, with independent intellectual property rights, and in 1999 in the counterparts in the first through the ISO9001 certification. So far the company has obtained 8 patents, 2 software copyright. The company independent research and production in the 3G stations, switches and other communications equipment, constant temperature OCXO, the temperature compensated crystal oscillator TCXO frequency device. Over the past 40 years, Tianma telecommunication OCXO both in terms of high precision, high stability, and miniaturization, SMD aspect, has always been the application of domestic communication field guide, known as "the first China VCOCXO".

Crystal oscillator, high stability crystal oscillator, constant temperature crystal oscillator, voltage controlled constant temperature crystal oscillator, TCXO, temperature compensated crystal oscillator frequency module and pressure.