Filter presses use a special filter medium to apply pressure to the material, causing the liquid to permeate 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, dye, food, brewing, ceramics, and environmental protection. The filter plates are characterized by stable performance, easy operation, safety, and low labor intensity; the metal squeezing cylinder is processed from seamless steel pipe and the plastic steel filter plate is precision cast, with high-temperature and high-pressure resistance, and long service life.