Filter presses use a special filtering medium to apply pressure to the material, allowing the liquid to be filtered out, and are a commonly used solid-liquid separation equipment. They were first applied in chemical industry production in the early 18th century and are still widely used in industries such as chemicals, metallurgy, dyeing, food, brewing, ceramics, and environmental protection. The filter plates are characterized by stable performance, easy operation, safety, and labor-saving; the metal extrusion cylinders are processed from seamless steel tubes and precision cast with plastic steel filter plates, which are resistant to high temperature and pressure and durable.