Shanghai Huikong Energy Sources Consultation Ltd., specially R & D, produce and sales Heating Ventilating & Air Conditioning, Heat-supply in city, District heating, Building Automation Conerol System and Cooling Control. Our main products including every kind of controler, hygrotest, electronic control valve and so on. Customers from all over the world trust and favor us for our high quality and low price products. To customers, our tenit is Quality, Service and Friends! To insure excellent capability and easy installation, we pick every product; To insure reasonable price and short supply period, we carefully sourcing supply company; To insure best choicless service and best solution, every stuff in our company has accept special training. It is our honer to provide more products information. Our aim is to give customers more benefit. our tenit is Quality, Service and Friends! The products we supply can meet: Constant Temperature Control Heating Exchange Unit Supply Constant Humidity Control VAV Terminals Constant Volume and Temperature Control Fresh Air Handling Units Control Fan Speed Control Control System of Air Condition Unit Pressure Control Constant Temperature and Hmidity Variable Frequency Control</p>