On Oct. 17th, 2019, State Administration for Market Regulation of the People,s Republic of China approval issued Jinan Zhongbiao Technology Co., Ltd. and Shandong Zhongbiao Qixin Testing Technology Co., Ltd. developed some kinds of CRMs, including the certified reference materials of zinc alloys for spectral analysis, zinc alloys for chemical analysis, copper and copper alloys for spectral analysis, lead concentrates, zinc concentrates, copper concentrate, molybdenum ore and molybdenum concentrate, the gradation certificate of the national certified reference mateiial was‘No. 1998 and No. 2004’.
