Mold temperature controllers are devices used in plastic injection molding to maintain the desired temperature of injection molds. These units work by heating or cooling a heat transfer fluid, such as water or oil, which is circulated through the mold. This process keeps the mold surface temperature at a constant and controlled level. Matsui brand conditioners have a feature-rich, user-friendly control panel and a compact design that allows them to be placed in various locations within the machine area.