GB 4716-2024 Chinese PDF GB/T 14264-2024 20-2025_Chinese: Methods for chemical analysis

20-2025_Chinese: Methods for chemical analysis of tungsten concentrates - Part 20: Determination of mercury content - Solid sampling and direct mercury analysis method (Chinese: 钨精矿化学分析方法 第20部分：汞含量的测定 固体进样直接测定法)

English versions: GB/T 45300-2025

GB/T 45359

English versions: GB/T 44953-2024

2-2025_Chinese: National food safety standard - Disinfectant (Chinese: 食品安全国家标准 消毒剂)

GB 4716-2024 Chinese PDF GB/T 14264-2024 20-2025_Chinese: Methods for chemical analysisGB 4716 2024_Chinese: Point type heat fire detectors (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB 4716 2024