EDM (referred to as EDM, the full name Electrical Discharge Machining) is a mechanical processing equipment, mainly used for EDM. Widely used in a variety of metal molds, machinery and equipment manufacturing. It is the use of immersion in the working fluid between the bipolar pulse discharge generated when the erosion of conductive materials, special processing methods, also known as EDM or EDM. Spark processing is mainly used for processing molds and parts with complex shapes of holes and cavities; processing of various conductive materials such as cemented carbide and hardened steel; processing of deep holes, irregular holes, deep grooves, narrow slots and Cutting sheet, etc .; processing a variety of forming tools, templates and thread ring and other tools.