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GB/T 21667-2024_Chinese: General rules of the second-hand goods qualification (Chinese: 二手货品质鉴定通则)
English versions: GB/T 12789
English versions: GB/T 3688-2025
GB/T 44971-2024_Chinese: Soil selenium grade (Chinese: 土壤硒含量等级)
GB/T 23327-2025_Chinese: Woven adhesive interlining (Chinese: 机织粘合衬)
GB/T 45133-2025 Chinese PDF (GB /T45133-2025) GB/T 24894-2025 GB/T 21667-2024_Chinese: General rules ofGB T 45133 2025_Chinese: Gas analysis The determination of the composition of gas mixtures Comparison methods based on one and two point calibration (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 45133 2025
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