... Product Description f-theta lensesmostly used in laser marking ,cutting, engraving machinekinds of specificsThe attached pic is for 300*300mm marking ... stage....IDS-12/20 mostly apply to using in marking ,engraving, cutting....IDS-25 Used in dynamic system, it could get ... ; 350*350mm and so onSoftware controlled card, used in marking , engraving, cutting trades