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OPTICAL POLISHING PITCH SUITABLE FOR ALL OPTICAL MATERIALS | Venmark International
A full line of optical polishing pitch that comes in five hardness grades and can be easily mixed for precisely lapping virtually any optical mater-ial is available from Meller Optics, Inc. of Providence, Rhode Island. Gugolz Optical Polishing Pitch from Meller Optics comes in five grades from very-soft to very-hard with melting points from 52°C …