162 / | HD | PAPER MAKING AND FIBER LIBERATION |
100 | DF | PROCESSES AND PRODUCTS {31} |
157.1 | DF | .~ Synthetic fiber (including chemically modified cellulose) {2} |
157.2 | DF | .~.~ Synthetic resin {2} |
157.4 | .~.~.~ Polymerized unsaturated compound {1} | |
157.5 | DF | .~.~.~.~> Hydrocarbon or halohydrocarbon |