On June 6, 2012, the State Quality Inspection and Quarantine Letter [2012] 283 of the
On June 6, 2012, the State Quality Inspection and Quarantine Letter [2012] 283 of the General Administration of Quality Supervision, Inspection and Quarantine approved and issued 45 national standard substances developed by Jinan Zhongbiao Science and Technology Co., Ltd. The license number for manufacturing measuring instruments is "National Standard 10001187".
