
According to the Ganzhou Municipal Market Regulation Administration, two national standards led by the Jiangxi Provincial Tungsten and Rare Earth Product Quality Supervision and Inspection Center – “Methods for Chemical Analysis of Tungsten Concentrates — Part 19: Determination of Fluoride Content — Ion Selective Electrode Method” (GB/T 6150.19-2025) and “Methods for Chemical Analysis of Tungsten Concentrates — Part 20: Determination of Mercury Content — Solid Sampling and Direct Mercury Analysis Method” (GB/T 6150.20-2025) – were officially released on January 24,…