Room 302,Building 3, Block 1,Dongwangzhuang Road,Wudaokou,Haidian Beijing Beijing 100083 China

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co2 sensors,co,co2.o3 gas detector,temperature humidity controller,co2 and voc monitor,thermostat,BACnet thermost,voc alarm, BACnet co2 transmitter,multifunctional IAQ monitor...

8# Building, #9 Courtyard Dijin Rd. Haidian district

Tongdy Control Technology has designed and manufactured high quality IAQ products and HVAC controllers for 15years. Our IAQ products includes transmitters/ /controllers of carbon dioxide and carbon mo...