Pay in 4 interest-free payments of $9.75 Learn more
Ships within 48 hours · Estimated delivery Aug 23 - Aug 28
4-2024_Chinese: Industrial fans - Determination of fan sound power levels under standardized laboratory conditions - Part 4: Sound intensity method (Chinese: 工业风机 标准实验室条件下风机声功率级的测定 第4部分：声强法)
English versions: GB/T 15972
English versions: GB/T 45044-2024
GB/T 27432-2025_Chinese: Technical specifications for remote assessment of laboratory (Chinese: 实验室远程评审技术规范)
GB/T 5169.12-2024 Chinese PDF (GB/T5169.12-2024) GB 44497-2024 4-2024_Chinese: Industrial fans - DeterminationGB T 5169. 12 2024_Chinese: Fire hazard testing for electric and electronic products Part 12: Glowing hot wire based test methods Glow wire flammability index (GWFI) test method for materials (Chinese: 12 GWFI) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 5169. 12 2024
