1. Warehousing
 2. Disassemble
 3. Manufacture of Impeller Shaft
 4. Manufacture of Impeller
  4-1. Manufacture of Main Board
  4-2. Manufacture of Blade
  4-3. Manufacture of Cone
  4-4. Welding
  4-5. Hard-facing welding
 5. Repair of Impeller Boss
 6. Assemble of Impeller & Boss & Shaft 
 7. Manufacture of Protection pipe of bold & nut
 8. Tungsten Thermal Spray Coating
 9. Balancing Work of Assembly
 10. Rust control, Painting, and Packaging