On October 9, 2020, the National Market监督管理总局 approved the "Spectroscopic Analysis Standard Material for Cast Iron, and Composition Analysis Standard Materials for Blast Furnace Slag, Electric Furnace Slag, Converter Slag, as well as Fluorine, Chlorine, Arsenic, Mercury, and Phosphorus in Coal" developed by Jinan Zhongbiao Technology Co., Ltd./Shandong Zhongbiao Qiyi Testing Technology Co., Ltd. The certification numbers for the standard materials are "Certificate No. 2325, 2326, 2327, 2328, and 2358."
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