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GB/T 2684-2025_Chinese: Test methods for foundry sands and molding mixtures (Chinese: 铸造用砂及混合料试验方法)
English versions: GB/T 45533-2025
English versions: GB/T 45219-2025
English versions: GB/T 26713-2025
GB/T 45384-2025_Chinese: Safety and control devices for gas burners and gas-burning appliances - Particular requirements - Pneumatic gas/air ratio pressure regulator (Chinese: 燃气燃烧器和燃烧器具用安全和控制装置 特殊要求 气动式燃气与空气比例调节装置)
GB 31335-2024 Chinese PDF GB/T 32440.2-2024 GB/T 2684-2025_Chinese: Test methods forGB 31335 2024_Chinese: Norm of the energy consumption per unit production of iron ore mining and dressing (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB 31335 2024
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