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 | DF | .~.~ Fiber embedded in or on the surface of a polymeric matrix {5} |
300.7 | DF | .~.~.~ Two or more layers {2} |
301.1 | .~.~.~.~ Including a free metal or alloy constituent |