| Aluminum |
|
Aluminum Alloy or Aluminum Tubes |
|
Brass Plate |
| Brass Sheet |
|
Brass Tubes |
|
Busbars |
| Copper |
|
Copper Bars or Sections |
|
Copper Sheet |
| Insulating Materials, Electrical |
|
Polishing or Buffing or Grinding Services |
|
Pressings, General Presswork |
| Shot Blasting Contractors |
|
Stainless Steel Sheet or Plate |
|
Stainless Steel Strip Stockholders |