Polishing machines are available in single to multi-group models for your selection. If a high brightness is not required, a single-group polishing machine will suffice. For a higher level of smoothness, choose a multi-group machine based on the material of the workpiece. Multiple polishing heads simultaneously grind the workpiece surface, equivalent to multiple polishing passes in one go, resulting in a much brighter finish than a single-group machine. The workpiece's original dimensions are not altered after polishing, and all metal materials achieve excellent polishing results.