We are one of the biggest HVAC Thermostat manufactuer and Building Automation System manufacture in China, we also provide OEM products for some internationalcompanies like Carrier, Schneider, TA, Heimerier, TCL, Media ect, we are very expect to cooperate with you soon!Quality of our products is on the same level with Honeywell & Siemens.All of our products have pass CE.