Home / Standards / GB/T 46699-2025 GB/T 46699-2025 Active Electronic grade tetramethylsilane 电子级四甲基硅烷 Standard Type GBT ICS 31.030 CCS L90 Status 现行 Issue Date 2025-10-31 Implementation 2026-05-01 Responsible Dept 国家标准委 Drafting Unit N/A