GB 440-1977 Standard PDF file download ; GB 440-1977 Standard english preview version download

GB Standard Code	GB 440-1977
Standard Category	China National Standards
GB Standard English Title	Aviation lubricating oil No.20
GB Standard Chinese Title	20号航空润滑油
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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