Guangzhou Gelingsi Air Conditioning Equipment Co., Ltd is a high-tech enterprise specializing in the research, development, production, sales and service of heating air conditioning automationand building automation. Our company has two production sites both in Shanghai and Guangdong and our headquarter is in Guangzhou. We have set up many branches and offices all over the world. Our products include central air condition intelligent thermostat, mechanical and electronic thermostat, extra-large LCD thermostat, different kinds of electric two or three way valves, electromagnetic valves, temperature control vales, electric fan valves, proportional and integral modulating valves, pressure differential bypass valves, hydraulic balance valves, electric ball valves, butterfly valves, heat meters, pneumatic actuators, electronics dirt removers, etc.