We are Changzhou guangdao electric based in Changzhou, China. We are member of TradeKey.com since January, 2013. Our business is related to Consumer Electronics industry and we specifically deal in solar hot water control system. Please find our product details below: Solar hot water controller Solar intelligent controller, for control the solar hot water working; operation easily. more functional; display part can be installed in requirement. Solar work station EPP cover; For control the working of solar hot water heater; Equipped with SP24 controller; Install easily; Quick to operate. Sell This product is the temp. difference circulating controller based on the WILO pump. It is used in the solar water heating system, room heating system and domestic hot water circulating systems. Sell Our products are suitable for split pressurized solar hot water system. contain solar controller and solar work station. Thank you for taking time to go through our business profile. If there are any questions, inquiries or comments, please feel free to contact us.