Founded in 1999, Tongdy Control Technology is an industry leader which has designed and manufactured high quality IAQ products and HVAC controllers for 12 years. 
Tongdy provides IAQ products including transmitters/controllers of carbon dioxide and carbon monoxide, with or without temperature and humidity detection; other IAQ indicators and controllers of ozone and VOC's, as well as micro particles. The HVAC products include temperature and humidity transmitters, programmable and non-programmable digital thermostats and humidity controllers with Modbus and Bacnet interface. Not only these products have Modbus or Bacnet option but also some of them have Zigbee or Wifi communication option.
All of these products have CE-approval.
As an advanced technology company, Tongdy heavily invests in R&D in IAQ and HVAC products and solutions for more than 10 years, it's professional to supply the high quality products with high quality service. Tongdy specializes in customizing products to meet the unique customer requirements with quick response at best price.
Tongdys products have been resold and used in European markets, North and South America markets, Gulf areas, Australia and New Zealand, Southeast Asia markets. Many local partners have established a stable relationship of cooperation with Tongdy, and we're together to won some local large projects and government projects.
With moving to the new building from March of 2014, Tongdy has not only more space and equipment, but also has more professional service to customers. We believe Tongdy will go another new milestone in the near future.
Tongdy has dedicated to establishing a win-win situation with the partners and customers. It will continue to develop more new products with high quality and best service.