Recently, XENDA Industrial Group Zhejiang Sensen Butterfly Valve Co., Ltd. has independently developed a high-temperature and high-pressure two-way zero leakage hard sealing butterfly valve. The new product adopts a radial dynamic balance sealing system of oblique elliptic disc and obtained the national patent. After nearly ten years of hard work, the quality of its valve products has been recognized by customers, especially their two-way hard sealing butterfly valve patent specialty products, end-users use 6 years without any quality problems. According to reports, the valve to achieve two-way import and export seal zero leakage, and compensation adjustment, long service life. For high temperature, high pressure conditions. Can be widely used in power plants, petrochemicals, metallurgy, food and other industries, completely replace similar foreign products, while the price is only one-third of the market price of similar foreign products.