... : plywood, fiberboard, dense board ,plastic board and rubber board.3.Hole forms we can process are: round ,slot, square, ... 2mm scope: 0.5 mm, especially for thin sheet below, 3: (1), petroleum, chemical, food, pharmaceutical precision filter, filter ... metal plate, plate leakage, lead, lead frame, metal substrate, (3) precision optical and mechanical parts, components, plane spring, (4) friction slices ...