On Mar. 25th, 2024, 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 2024 No.3 ’ approval issued Jinan Zhongbiao Technology Co. , Ltd. and Shandong Zhongbiao Qixin Testing Technology Co., Ltd. developed CRMs，certified reference materials for physical characteristic and chemical composition of coke.