GB/T 20871.61-2024 Chinese PDF (GB/T20871.61-2024) GB/T 41869.4-2024 English versions: GB/T 45335-2025

English versions: GB/T 45335-2025

GB/T 45446-2025_Chinese: Interface specification for signal in space of BeiDou navigation satellite system precise point positioning service (Chinese: 北斗卫星导航系统精密单点定位服务空间信号接口规范)

English versions: GB/T 17630-2024

GB/T 45271-2025_Chinese: Man-made fiber - Determination of catechins content - High performance liquid chromatography (Chinese: 化学纤维 儿茶素含量的测定 高效液相色谱法)

GB/T 20871.61-2024 Chinese PDF (GB/T20871.61-2024) GB/T 41869.4-2024 English versions: GB/T 45335-2025GB T 20871. 61 2024_Chinese: Organic light emitting diode(OLED) displays Part 6 1: Measuring methods of optical and electro optical parameters (Chinese: 6 1) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 20871. 61 2024