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International Standard Category: Abrasives

GB/T 2490-2007    Bonded abrasive products—Hardness grade measurement
固结磨具 硬度检验;
Category No.:25.100.70 Valid Status:superseded
Issued Organization:AQSIQ, SAC Issued Date:2007-7-30
Implemented Date:2007-11-1 Abolished Date:
Superseded Standard.:GB/T 2490-2018 Bonded abrasive products—Hardness grade measurement
Superseded Date:2019-2-1
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