Introduction 1. With hopper as a feeding buffer, it ensures weighing velocity and precision. 2. Sole weight feeding system: inverter velocity control, double-speed feeding. 3. Bag clamping system composes of weighing frame, sensor, and bracket. 4. Pneumatic control system for material feeding, filling and bag clamping. 5. Belt transmission for high stability.   Operation flow Manually fix and clamp the bag, the powder stored in hopper will flush to filling bag automatically, the weighing apparatus will start to monitor the increasing volume, the fast filling valve will be shut off when it reaches level "1" while the slow filling is activated. After arriving at level "2", filling process is completed and the bag is released.   Semi-automatic sealing machine Sealing speed 5m/min, height adjustable, placing the bag manually into the sealing machine and starting foot switch for seal.