1. Suitable for through and drum springs; 2. It can adapt to spring heat treatment devices of different heights, and it is easy to adjust; 3. Non-woven fabric connection device, material saving, labor saving; 4. Multiple fault detection devices can effectively reduce losses; 5. Special protective devices; 6. Using a fully CNC spring head, all spring parameters can be adjusted through the display. Note: One or two or three spring bag filling machines can be used according to customer requirements.