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GB/T 16731-1997 standard english preview version PDF file download

GB Standard Code GB/T 16731-1997
Standard Category China National Standards
GB Standard English Title The graduation of sound absorption propertyfor absorbent products
GB Standard Chinese Title 建筑吸声产品的吸声性能分级
Chinese Version Price $15 USD per 50 pages
English Translation Price About $15  per 1 page; Inquire us for detail price

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