Founded in 1999, Tongdy Control Technology Co., Ltd. is a manufacturer of digital thermostats for HVAC and indoor air quality monitors& controllers, as well as humidity controllers. We can supply following products: Programmable and non-programmable digital thermostats for FCU, AC systems boiler heating, floor heating systems; Bacnet and Modbus thermostats; Digital humidity controllers with temperature option; Various CO2 monitors and controllers; As well as other IAQ monitors and controllers. Especially we supply customized products for clients in our professional experience with a short term. As a high level control technology company, it bends itself to R&D on high level and high quality control products for HVAC systems and IAQ applications. All products have perfect performance and good stability, reliability with lower prices. Moreover, we own a praisable R&D team with enough control experience and high efficiency. We also specilize in providing customizing products to specific requirements from customers.