Guangzhou Tianma Telecom Technology Co., Ltd.   

The company predecessor is Guangzhou Chinese Putian Youtong 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 independently developed the production applied in 3G base station, switches and other communication equipment oven controlled crystal oscillator, TCXO OCXO TCXO frequency device. Over the past 40 years, Tianma telecommunication OCXO both in terms of high precision, high stability, and miniaturization, surface mount aspect, has always been the application of domestic communication field guide, known as the "first Chinese VCOCXO".

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