Vents that channel the bottom of plastic, is the most important region in the HR system. It dominated the first function of the nozzle, despite it has been placed in the nozzle or not. It is classified into the mouth spray valves or valve body heat. The vent controls related to both the controller and the time line of hot asphalt that open vents.
đang được dịch, vui lòng đợi..
