On November 5, 2008, the General Administration of Quality Supervision, Inspection and Quarantine and

On November 5, 2008, the General Administration of Quality Supervision, Inspection and Quarantine and the National Standardization Management Committee issued the document "The National Standard Approval and Publication Notice of the People's Republic of China No. 17, 2008 (General No. 130)", and approved and issued the national standard samples for Brass spectral analysis developed by Jinan Zhongbiao Science and Technology Co., Ltd. (14 kinds).