Tongdy Control Technology Co., Ltd., founded in 1999 in Beijing China, is a leading hi-tech company engaged in design and manufacture of control products for BAS and HVAC systems.

With more than 10 years' experience in product design and research, now Tongdy's product range has covered programmable and non-programmable digital room thermostats for HVAC systems, digital humidity detectors and controllers, and various IAQ detectors and controllers like say for carbon dioxide (CO2), carbon monoxide (CO), ozone (O3) and VOC.

All above Tongdy products are available with options like Modbus RS485 interface and some of the thermostats can be provided with BACnet protocol. USB data logging and Zigbee wireless communication are also selectable for some of our IAQ products.

With a team of highly talented and experienced engineers, Tongdy is capable of providing the best products possible with excellent performance, super reliability, and competitive prices, and creating new product lines constantly. In addition, Tongdy offers customized services to meet special requirements. Our ODM services have received positive feedbacks due to our accurate understanding and following up of customer's requirements.

Now Tongdy's market has reached not just the Europe, North America, but also the South America, Asia Pacific and the Gulf Area. Our sales volume has increased for more than 30% each year during the last three years.

And with the expectation of an even prosperous future, we are about to move in our own building located in the Environment Protection Park in Northwest Beijing!