On Jan. 10th, 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 carbon steel and alloy steel for spectral analysis, the gradation certificate of the national certified reference mateiial was ‘No. 190 , 2019’.