GB/T 20064.1-2023 Chinese PDF (GB/T20064.1-2023) GB/T 44911-2024 English versions: GB/T 45536-2025

English versions: GB/T 45536-2025

drill pipe and line pipe used as casing or tubing (Chinese: 石油天然气工业 套管、油管、钻杆和用作套管或油管的管线管性能公式及计算)

English versions: GB/T 45002-2024

English versions: GB/T 45182-2025

GB/T 17818-2025_Chinese: Determination of vitamin D3 in feeds - High-performance liquid chromatography (Chinese: 饲料中维生素D3的测定 高效液相色谱法)

GB/T 20064.1-2023 Chinese PDF (GB/T20064.1-2023) GB/T 44911-2024 English versions: GB/T 45536-2025GB T 20064. 1 2023_Chinese: Reciprocating internal combustion engines Handle starting equipment Part 1: Safety requirements and tests (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 20064. 1 2023