Huaneng Zhongtian Energy Saving Technology Group Co., Ltd., a rock wool and rubber and plastic production base in northern China, adheres to the corporate purpose of "giving full play to industrial advantages and promoting energy-saving society". The group devotes itself to continuous innovation and has developed into a well-known new model at home and abroad. Energy-saving building materials base and modern enterprise integrating production, education and research. It owns brands such as Huaneng Zhongtian, Stefo, Atson, Yalong, and Wickfei.

Huaneng Zhongtian Group has a financial strength and technological level, with an annual output of 150,000 tons of rock wool and 2 million cubic meters of rubber and plastic. Its product sales network covers the whole country and is exported to the United States, Russia, Germany, France, Malaysia and Southeast Asia.