| 264 / | HD | PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES |
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| 165 | DF | FORMING CONTINUOUS OR INDEFINITE LENGTH WORK {8} |
| 171.1 | DF | .~ Layered, stratified traversely of length, or multiphase macrostructure containing material (e.g., conjugate, composite, islands-in-sea, core-sheath, etc.) {8} |
| 173.16 | DF | .~.~ Melt co-extrusion (e.g., two layers, etc.) {4} |
| 173.19 | DF | .~.~.~ Polyamide (e.g., nylon, etc.) or addition polymer of at least one monoethylenically unsaturated monomer (e.g., polyethylene, polypropylene, polystyrene, etc.) containing layer {1} |
| 174.1 |  | .~.~.~.~ Styrene polymer containing |