Home / Standards / GB/T 19203-2026 GB/T 19203-2026 Upcoming Determination of calcium, magnesium and sulphur content for compound fertilizers 复合肥料中钙、镁、硫含量的测定 Standard Type GBT ICS 65.080 CCS G20 Status 即将实施 Issue Date 2026-02-27 Implementation 2026-09-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A