Polish the surface of the workpiece using a sand paper. In this step, it will break out as a polished, 240, 400, 600, 800, 1000, 1200, and make final grinding polishing by Khon-each piece of work that will be required to periodically scrub nurse เดียยว together. After you have finished grinding batch. We'll bring the workpiece to the bite and the workpiece to perform endoscopic miniature landscape. View friends (Ferrite) and Pearlite
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