Do you need a mold thermostat for hot runner molds since you have a thermostat? What is the relationship between a thermostat and a mold thermostat? What equipment does the cooling water flow through

Do you need a mold thermostat for hot runner molds since you have a thermostat? What is the relationship between a thermostat and a mold thermostat? What equipment does the cooling water flow through to the mold? The thermostat of the mold thermostat and hot runner is to control the temperature of different equipments; the thermostat is to control the temperature of the hot runner system; the mold thermostat is to control the temperature of the mold by controlling the temperature of hot water, cold water or hot oil. The water channel flows through the mold and changes the temperature of the mold shaped cavity through heat exchange.