Pay in 4 interest-free payments of $9.75 Learn more
Ships within 48 hours · Estimated delivery Aug 18 - Aug 23
1-2025_Chinese: Testing and calculating methods for seasonal performance factor of energy recovery ventilators for outdoor air handling - Part 1: Seasonal performance factor of sensible heating recovery (Chinese: 热回收新风机组季节性能系数测试和计算方法 第1部分：供热显热回收季节性能系数)
English versions: GB/T 45182-2025
GB/T 23500-2025_Chinese: General quality for yuanxiao (Chinese: 元宵质量通则)
2-2025_Chinese: Plastics - Impact-resistant polystyrene (PS-I)moulding and extrusion materials - Part 2: Preparation of test specimens and determination of properties (Chinese: 塑料 抗冲击聚苯乙烯（PS-I）模塑和挤出材料 第2部分：试样制备和性能测定)
English versions: GB/T 30889-2024
GB/T 45489-2025 Chinese PDF (GB /T45489-2025) GB/T 45322.1-2025 1-2025_Chinese: Testing and calculating methodsGB T 45489 2025_Chinese: General technical specification of the track panel for medium and low speed maglev (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 45489 2025
US$ 83.67
US$ 164.37
US$ 55.60
US$ 144.95
US$ 111.61
US$ 127.01
US$ 56.27
US$ 159.80
US$ 79.18
US$ 113.54
US$ 92.65
US$ 54.85
