GB/T 27917.1-2023 Chinese PDF (GB/T27917.1-2023) GB/T 45130-2025 English versions: GB/T 45025-2024

English versions: GB/T 45025-2024

English versions: GB/T 45459-2025

GB/T 45196-2025_Chinese: Technical guidelines for environmental quality survey of agricultural production areas (Chinese: 农产品产地环境质量调查技术指南)

GB/T 1288-2024_Chinese: Chemical reagent - Potassium sodium tartrate tetrahydrate (Chinese: 化学试剂 四水合酒石酸钾钠 （酒石酸钾钠）)

2-2025_Chinese: Uncut finished spectacle lenses - Part 2: Power-variation (Chinese: 眼镜镜片 第2部分：渐变焦)

GB/T 27917.1-2023 Chinese PDF (GB/T27917.1-2023) GB/T 45130-2025 English versions: GB/T 45025-2024GB T 27917. 1 2023_Chinese: Express service Part 1: Basic terminology (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 27917. 1 2023