Biscuit making machine is the equipment for producing biscuits. It includes three main parts: feeder, extruder and cutter. The whole process of biscuit making is controlled by PLC (Programmable Logic Controller). The raw materials are supplied to the feeder from hoppers or bins through vacuum pipes or screw conveyors. The raw materials are then mixed and kneaded by the extruder to form dough. After this step, the dough can be directly sent to ovens or cut into biscuits by the cutter.