| 428 / | HD | STOCK MATERIAL OR MISCELLANEOUS ARTICLES |
| 221 | DF | WEB OR SHEET CONTAINING STRUCTURALLY DEFINED ELEMENT OR COMPONENT {9} |
| 292.1 | DF | .~ Noninterengaged fiber-containing paper-free web or sheet which is not of specified porosity {7} |
| 297.4 | | .~.~ Fiber embedded in or on the surface of a polymeric matrix {5} |
| 297.7 | DF | .~.~.~> Fiber is on the surface of a polymeric matrix having no embedded portion |
| 298.1 | DF | .~.~.~> Fibers are aligned substantially parallel {5} |
| 300.1 | DF | .~.~.~> Fiber is precoated |
| 300.4 | DF | .~.~.~> Two or more chemically different fibers |
| 300.7 | DF | .~.~.~> Two or more layers {2} |