: This standard equate the ISO6153:1989 "chrome ore to take samples" (English version). Annex A is normative appendix of this national standard. This standard put forward by the China iron and steel
association. This standard by the national iron and iron alloy standardization technical committee to review. This standard drafting unit: inspection and quarantine, ningbo science and technology Institute, tianjin entry-exit inspection and quarantine of the People's Republic of China, information standards institute of metallurgy industry. The main drafter of this standard: floor jianyuan, d, Zhou Chengdong, guo-zhou cao, shi-ming sun, Chen Zibin.
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