Home / Standards / GB/T 30856-2025 GB/T 30856-2025 Active GaAs substrates for LED epitaxial chips LED外延芯片用砷化镓衬底 Standard Type GBT ICS 29.045 CCS H 83 Status 现行 Issue Date 2025-08-01 Implementation 2026-02-01 Responsible Dept 国家标准委 Drafting Unit N/A