Home / Standards / GB/T 4348.1-2026 GB/T 4348.1-2026 Upcoming Component determination of sodium hydroxide for industrial use—Part 1: Sodium hydroxide and sodium carbonate 工业用氢氧化钠成分分析 第1部分:氢氧化钠和碳酸钠 Standard Type GBT ICS 71.060.40 CCS G11 Status 即将实施 Issue Date 2026-01-28 Implementation 2026-08-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A