GB/T 19277.1-2025 Chinese PDF (GB /T19277.1-2025) GB/T 14600-2025 GB/T 18029

GB/T 18029

1规范的参数化)

3-2025_Chinese: Types and dimensions of lamp caps - Part 3: Prefocus caps (Chinese: 灯头的型式和尺寸 第3部分：预聚焦式灯头)

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)

English versions: GB/T 21121-2024

GB/T 19277.1-2025 Chinese PDF (GB /T19277.1-2025) GB/T 14600-2025 GB/T 18029GB T 19277. 1 2025_Chinese: Determination of the ultimate aerobic biodegradability of plastic materials under conctrolled composting conditions Method by analysis of evolved cabon dioxide Part 1: General method (Chinese: 1) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 19277. 1 2025