GB 21257-2024 Chinese PDF GB/T 45183-2025 GB/T 24931-2025_Chinese: Prescription for installation

GB/T 24931-2025_Chinese: Prescription for installation of the external lighting and light-signalling devices for the all-terrain vehicles (Chinese: 全地形车照明和光信号装置的安装规定)

English versions: GB 45188-2024

71-2024_Chinese: Communication networks and systems for power utility automation - Part 7-1: Basic communication structure - Principles and models (Chinese: 电力自动化通信网络和系统 第7-1部分：基本通信结构 原理和模型)

GB 17945-2024_Chinese: Fire emergency lighting and evacuate indicating system (Chinese: 消防应急照明和疏散指示系统)

GB 21257-2024 Chinese PDF GB/T 45183-2025 GB/T 24931-2025_Chinese: Prescription for installationGB 21257 2024_Chinese: Norm of energy consumption per unit production of caustic soda, PVC, methane chloride (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB 21257 2024