LITHOTRAC Dual-1000: After placing the wafer on the wafer clamp, click on the control panel to start the device. After vacuum adsorption of the wafer by the dual arm robotic arm, according to the process formula set by the customer, the wafer is transported to various units. A wafer is taken out from the bottom to the top in the order specified by the wafer clamp. It can also be set from which wafer to start working. After processing, the robotic arm places the wafer back in its original position on the wafer clamp.