Surface resistance: 104~106Common type and heat-resistance type(120℃ ) are available. Overall Size: 535*460*570mm . Can accommodate 50 pieces of PCB. Specifications of PCBs to be accommodated: 535*(50-390)mm Side guide slot: depth 3.5mm, width 5mm , pitch 10mm The top and bottom boards are made of metal. Gear track allow easy operation.