双环科技(000707.SZ)：电池级碳酸钠已经向国内规模较大的一些钠电池正极材料厂家供货或者做产品测试

Core Viewpoint - The company identifies the main technical barrier for battery-grade sodium carbonate as the removal of magnetic foreign objects and impurities [1] Group 1: Company Developments - The company has begun supplying battery-grade sodium carbonate to several large domestic manufacturers of sodium battery cathode materials or is conducting product testing with them [1]