两类重点品种(集装箱、酸洗板)2021年01月-10月的带出品率数据来源、数据真实性、指标计算方法、指标计算结果第三方认证
Third party certification of data source, data authenticity, index calculation method and index calculation results of two types of key varieties (container and pickling plate) from January to October 2021