On May 10, 2017, the General Administration of Quality Supervision, Inspection and Quarantine approved the preparation of national standard materials such as "raw cast iron, aluminium alloy, stainless steel, high-speed tool steel, superalloy, precision alloy spectral analysis standard materials and bauxite, zinc concentrate, lead concentrate component analysis standard materials" developed by Jinan Zhongbiao Technology Co., Ltd. / Shandong Zhongbiao Enterprise Credit Inspection Technology Co., Ltd. The license number of measuring instruments is "National Standard 10001660 and National Standard 10001664".