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GB/T 7631.4-1989 standard english preview version PDF file download

GB Standard Code GB/T 7631.4-1989
Standard Category China National Standards
GB Standard English Title Lubricants and related products (class L)--Classification--Part 4:Family F (Spindlebearings,bearings and associated clutches)
GB Standard Chinese Title 润滑剂和有关产品(L类)的分类 第4 部分:F组 (主轴、轴承和有关离合器)
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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