Stainless steel construction, easy to clean and maintenance. Optional bottom chamber available. Fixed ratio design for precise ratio control. Static or Dynamic mixing valve applied for different material requirements. Microprocessor controlled. Interactive memory setting function creates user friendly interface. Multiple variable shot volume program up to 7 sequences. Easy shot size and flow rate adjustment. Precise gear pumps, supply the material steadily and consistently PTC thermal sensor insures temperature of the material tube constant Error-protection design, error message display