There are two models to choose from based on the different amount of material per use of the equipment: one is 50 kilograms of material per use (125 liters of liquid finished product), and the other is 100 kilograms of material per use (250 liters of liquid finished product). This chemical feeder adopts a specially designed corrosion-resistant and wear-resistant PTFE chemical pump to form a vortex circulation stirring water flow, which has fast dissolution speed and thorough dissolution. And it has dual functions of chemical feeding and lifting, which can directly lift the melted liquid into the storage tank.