On May 28th, 2026, State Administration for Market Regulation of P.R.China, Standardization Administration of the People,s Republic of China ‘The People,s Republic of China national standard approval issued to post 2026 No.25 ’ approval issued Jinan Zhongbiao Technology Co. , Ltd. and Shandong Zhongbiao Qixin Testing Technology Co., Ltd. developed CRMs，certified reference materials series of harmful elements fluorine, chlorine, arsenic, mercury, phosphorus in coals.
