Chemical Mechanical Planarization(CMP) is a polishing process used to manufacture wafers for the semiconductor industry. it requires the use of a polishing tool and polishing slurry and treat wafers to be flat . Slurry filtration is a key process. The slurry particles range is 30-200um regularly, but some particle control is 0.5um. if unfiltered, scratch the wafer during polishing.




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