HS CodesXVIII · Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; clocks and watches; musical instruments; parts and accessories thereof90 · Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereof9020902000902000Chapter 90Copy pageOther breathing appliances and gas masks, excluding protective masks having neither mechanical parts nor replaceable filtersDescriptionOther breathing appliances and gas masks, excluding protective masks having neither mechanical parts nor replaceable filtersWas this page helpful?YesNoPrevious901920Ozone therapy, oxygen therapy, aerosol therapy, artificial respiration or other therapeutic respiration apparatusNextOrthopaedic or fracture appliances902110