Shanghai Huikong Energy Sources Consultation Co,. Ltd. is engaged in automatic control systems and HVAC series products R & D, production and management of high-tech professional company. Our main business direction is based on the HVAC industry, providing comprehensive automation products and services. Our products including damper actuators, temperature transmitters, CO2 sensors, temperature and humidity transmitters, pressure switch, differential pressure transmitter, electric valves, ect. Our product quality has been well recognized by customers and welcomed in worldwide market.