| 427 / | HD | COATING PROCESSES | 
| 58 | DF | ELECTRICAL PRODUCT PRODUCED {21} | 
| 126.1 | DF | .~ Metallic compound coating {2} | 
| 126.3 |  | .~.~ Metal oxide, peroxide, or hydroxide coating {3} | 
| 126.4 | DF | .~.~.~> Metal is Al | 
| 126.5 | DF | .~.~.~> Metal is Au, Ag, Pt, Pd, Ru, Rh, Os, Ir | 
| 126.6 | DF | .~.~.~> Metal is Ni, Fe, or Co |