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} |
293.4 | DF | .~.~ Fiber embedded in a ceramic, glass, or carbon matrix {2} |
293.7 | .~.~.~ Fibers are aligned substantially parallel {1} | |
294.1 | DF | .~.~.~.~> Fiber is precoated |