The polishing composition
2001
The present invention relates to a polishing composition comprising silicon oxide particles, iron and / or aluminum salt water and polyamino acids; The present invention further relates to a method of polishing using the polishing composition; relates to a method of manufacturing a disk the method of a substrate, which comprises the step of using the polishing composition for polishing a substrate; further relates to the use of the polishing composition prepared magnetic disk substrate.
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