main features: AMP-1SType is a continuously variable speed grinding and polishing machine that integrates pre grinding, grinding, and polishing. It can adjust the required speed according to the user's needs（50-1000/Minutes). The machine has a fiberglass casing, beautiful appearance, and high rotation speed. If we choose products produced by our company at the same timeMPT-1Semi automatic grinding and polishing head (φ)22、 φ30、 φ45mmIt can be freely selected, which can achieve twice the result with half the effort and reduce the labor intensity of the operator. It is a relatively complete and ideal metallographic preparation equipment.