纯度达99.99997%！我国这一领域实现重要技术突破

Group 1 - The core achievement of Wanrui Cold Electric Technology Co., Ltd. is the successful engineering acceptance of its self-developed low-temperature refining and neon removal device, which produces helium gas with a purity of 99.99997% (6N9 grade) and neon impurity content below 0.3 ppm [1][3] - This device is the first of its kind in China to extract 6N9 grade ultra-pure helium from natural gas, marking a significant breakthrough in the field of low-abundance natural gas helium extraction [1][3] - The innovative "combined law" helium extraction process developed by the research team integrates four stages: hydrogen removal, membrane separation, pressure swing adsorption, and low-temperature refining, allowing for efficient purification of helium [3] Group 2 - The device operates continuously without downtime for 24 hours and can extract 400,000 cubic meters of high-purity helium annually [3] - Helium is recognized as a non-renewable strategic resource, essential in various fields such as large scientific installations, advanced medical applications, and aerospace, often referred to as the "blood of industry" [3]