Gb/T 20252. Gb u20252 gb/t 699 steel was released in 1987 by the miit with the aim of providing ideal steel grade for industrial applications due to the wide array of uses for the metal. 国家标准《钴酸锂》 由 tc243 （全国有色金属标准化技术委员会）归口， tc243sc4 （全国有色金属标准化技术委员会粉末冶金分会）执行 ，主管部门为 中国有色金属工业协会。 主要起草.
镍钴锰酸锂电化学性能测试 放电平台容量比率及循环寿命测试方法 electrochemical performance test of lithium nickel cobalt. Gb u20252 gb/t 699 steel was released in 1987 by the miit with the aim of providing ideal steel grade for industrial applications due to the wide array of uses for the metal.