Keram (Nanjing) Science & Tech. Co., Ltd. was founded in 1998, focusing on research, development, manufacturing and sales of the most advanced geothermal water source heat pump and air heat pump systems. Meanwhile, we manufacture refrigeration accessories such as pressure and temperature controls, flow switches, thermostats and solenoid valves. Keram has spent a huge amount of investment in manufacturing, testing equipment and laboratory. Each manufacturing procedure is under the inspection of different testing machines to ensure that every unit is properly assembled and reach the design quality. Using the most reliable components in our unit is also another quality control method. Siemens, Danfoss, Copeland and Honeywell components are widely used on our products to ensure high product quality. Many of our products have passed European Union Approval - CE and ISO9001 authentication. Now, our products have been sold to European markets in large scale and obtained greet comments from our customers.