Jilin Sheng Zhongquan Industrial Co., Ltd. (Changchun Kuancheng Boiler Exhaust Valve factory), was established in 1985, mainly engaged in manufacturing and selling full automatic air vent valve for hot water boiler and heating pipe.

The automatic air vent valve which named Zhongquan is the fist product of the company, it is also the famous product in Jilin province. The product has obtained many items of national patent, it's technique and quality has reach international level.

The brand Zhongquan was formally registered in Jan 11th 1991, over 27years research and development, Zhongquan automatic air vent valve has became the authority in the air vent field. It has experienced all the tests by the clients. In the past 27 years, the company haven't got one compliant from the user. The brand Zhongquan has became the symbol of high quality. Now we can proudly say: "If you have any damages caused by our quality, please claim to us".

Since the foundation of the company to Now, the sales field has covered northeast, northwest, north and the central, more than 18 provinces and cities.

In the year 2001, the company first passed ISO 9001: 2000 Quality Management System Authentications. This made a solid foundation for the domestic development and the international trade exploring.

If you are interested in our product, or you have any questions in our product, please don't hesitate to contact us.