Home / Standards / GB/T 25074-2025 GB/T 25074-2025 Active Solar-grade polycrystalline silicon 太阳能级硅多晶 Standard Type GBT ICS 29.045 CCS H 82 Status 现行 Issue Date 2025-06-30 Implementation 2026-01-01 Responsible Dept 国家标准委 Drafting Unit N/A