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} |
115.52 | DF | .~ Using wave energy, electrostatic field or electrical discharge {1} |
115.53 | .~.~ Ultraviolet radiation |