GB/T 18690.4-2023 Chinese PDF (GB/T18690.4-2023)

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GB/T 18690.4-2023 Chinese PDF (GB/T18690.4-2023)GB T 18690. 4 2023_Chinese: Agricultural irrigation equipment Filters for micro irrigation Part 4: Granulated media filters (Chinese: 4) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 18690. 4 2023

English versions: GB/T 18603-2023

1-2024_Chinese: Plastics - Determination of the viscosity of polymers in dilute solution using capillary viscometers - Part 1:GEneral principles (Chinese: 塑料使用毛细管黏度计测定聚合物稀溶液黏度第1部分：通则)

GB/T 1610-2024_Chinese: Chromium trioxide for industrial use (Chinese: 工业铬酸酐)

English versions: GB/T 23263-2024

3-2024_Chinese: Cybersecurity technology - Evaluation criteria for IT security - Part 3: Security assurance components (Chinese: 网络安全技术信息技术安全评估准则第3部分：安全保障组件)

GB 44015-2024_Chinese: Minimum allowable of energy efficiency and energy efficiency grades for cold store(box) and refrigerant compressor condensing unit (Chinese: 冷库（箱）和压缩冷凝机组能效限定值及能效等级)

GB/T 17925-2024_Chinese: Practice for X-ray digital radioscopic examination of cylinder weld (Chinese: 气瓶对接焊缝X射线数字成像检测)

GB/T 8607-2024_Chinese: Specified wheat flour (Chinese: 专用小麦粉)

English versions: GB/T 45410

1-2024_Chinese: Arc welding equipment - Part 1: Welding power sources (Chinese: 弧焊设备第1部分：焊接电源)

English versions: GB/T 31907-2025

English versions: GB 12158-2024

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