1. Shaft parts: bearing shafts, drive shafts, threaded shafts, etc.
2. Threaded parts: Threaded structural parts, such as nuts, bolts, threaded shafts, etc.
3. Cylindrical parts: parts with precision machined cylindrical surfaces, such as rollers, sleeves, bushings, etc.
4. Inner hole parts: parts with inner hole structure, such as bearing sleeves, flanges, nut seats, etc.
5. Complex shape parts: Complex three-dimensional shape parts, such as gears, cams, curved surfaces, etc.
6. Auto parts: engine parts, transmission system parts, suspension system parts, etc.
7. Aerospace parts: engine parts, aircraft bearings, etc.
8. Electronic devices: parts in electronic equipment, such as connectors, motor shafts, etc.
9. Energy industry parts: wind turbine shafts, turbine shafts, etc.