Home / Standards / GB/T 45227-2025 GB/T 45227-2025 Active Technical requirements for closed-off management system of chemical industry park 化工园区封闭管理系统技术要求 Standard Type GBT ICS 71 CCS G00 Status 现行 Issue Date 2025-01-24 Implementation 2025-05-01 Responsible Dept 国家标准委 Drafting Unit N/A