Disclosed is an apparatus for continuously producing an artificial marble plate capable of simultaneously and uniformly hardening a raw material compound for an artificial marble plate, preventing the warpage of the artificial marble plate, and improving heat transmission efficiency and productivity. The keeper has a rear wall, side walls and a floor. These rollers are disposed in a protective cover. The sleeve is also airtight, and remains properly positioned during printing operations. The instructions for implementing the at least one responsive action associated with each of the one or more trigger events is then used to automatically implement the at least one responsive action associated with the detected trigger event. By using such a thermosetting resin composition, it is possible to manufacture multilayer bodies and circuit boards which are excellent in dielectric characteristics, adhesiveness, processability, heat resistance, flowability, etc.