This document provides specifications for grinding and polishing mold surfaces for injection molds. It details several important steps in the preparation and polishing process, including checking for defects, selecting proper tools, and protecting the workpiece. Specific guidelines are given for clamping and protecting different types of workpieces. The document also outlines the content and scope of self-inspections, precautions for polishing operations, and the uses of an ultrasonic polishing machine.