- Etching and engraving (6)
- Engraving jewelry, silverware, or metal (2)
- Painting, coating, and hot dipping (2)
- Aluminum coating of metal products (1)
- Coating of metals and formed products (1)
- Coating of metals with plastic or resins (1)
- Hot dip coating of metals or formed products (1)
- Painting of metal products (1)
- Rust proofing (hot dipping) of metals and formed products (1)
