... mature products.It is with High frequency heating to bend the plywood, MDF sheet, HDF sheet to chair, sofa arm, musicial ... There are mainly two type of press, with lateral pressure and one directionpressure, with the tonnage of the press range from ... ). HIGH FREQUENCY CURVED PLYWOOD PRESS: Plywood, MDF, HDF bending: office chair, sofa, bed elements, musical instrument and others2). HIGH FREQUENCY FRAME ...