| 8 / | HD | BLEACHING AND DYEING; FLUID TREATMENT AND CHEMICAL MODIFICATION OF TEXTILES AND FIBERS |
| 115.51 | DF | CHEMICAL MODIFICATION OF TEXTILES OR FIBERS OR PRODUCTS THEREOF {7} |
| 116.1 | DF | .~ Cellulose fibers {8} |
| 120 | DF | .~.~ Esterifying, etherifying or immunizing {2} |
| 121 | ![]() | .~.~.~ Acetylation |