Rigonno E&C Co., Ltd. is located in Hefei which is known for its science and education. It is a scale-large, modern and integrated company which integrates researching with manufacturing and trading. Resorting to solid R&D capability of several domestic research institutes and a number of famous universities, successfully develop a variety of intelligent control systems, energy saving and environmental protective goods and energy supplying products. All have been exported to countries in the world, and win a good reputation.