1. Warehousing
 2. Disassemble
 3. Manufacture of Cylinder Tube
 4. Manufacture of Piston Rod
 5. Repair of PISTON 
 6. Manufacture of Rod Cover 
 7. Repair of Head Cover
 8. Manufacture of Bellows 
 9. Seal Kit Change
 10. Assembly of Coal Mill Cylinder 
 11. Performance Test
 12. Rust control, Painting, and Packaging