GB/T 21220-2024 Chinese PDF (GB/T21220-2024) GB/T 45120-2024 English versions: GB/T 30544

English versions: GB/T 30544

English versions: GB/T 45537-2025

GB/T 22452-2025_Chinese: General specification of non-linear optical borate crystal devices (Chinese: 硼酸盐非线性光学单晶元件通用规范)

GB/T 45511-2025_Chinese: Industrial field communication quality inspection - General technical specifications (Chinese: 工业现场通信质量检测 通用技术规范)

4-2024_Chinese: Inspection of grain and oils - Assistant atlas of grain sensory inspection - Part 4: Oilseeds (Chinese: 粮油检验 粮食感官检验辅助图谱 第4部分：油料)

GB/T 21220-2024 Chinese PDF (GB/T21220-2024) GB/T 45120-2024 English versions: GB/T 30544GB T 21220 2024_Chinese: Soft magnetic metallic materials (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 21220 2024