GB/T 37820.1-2024 Chinese PDF (GB/T37820.1-2024) GB/T 2684-2025 1871-2024_Chinese: Measuring relays and protection

1871-2024_Chinese: Measuring relays and protection equipment - Part 187-1: Functional requirements for differential protection - Restrained and unrestrained differential protection of motors

GB/T 31902-2025_Chinese: Inspection method for appearance defects on garment interlining (Chinese: 服装衬布外观疵点检验方法)

test methods and acceptance criteria (Chinese: 农用挂车和被牵引设备 牵引杆千斤顶 第1部分：设计安全、试验方法和验收条件)

English versions: GB/T 44890-2024

English versions: GB/T 18849-2023

GB/T 37820.1-2024 Chinese PDF (GB/T37820.1-2024) GB/T 2684-2025 1871-2024_Chinese: Measuring relays and protectionGB T 37820. 1 2024_Chinese: Ships and marine technology Design, location and use of shipboard safety signs, fire control plan signs, safety notices and safety markings Part 1: Design principles (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 37820. 1 2024