Section 18 Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; clocks and watches; musical instruments; parts and accessories thereof 90 Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereof 90 19 Mechano-therapy appliances; massage apparatus... respiration apparatus Commodity Code Description 90 19 10 Mechano-therapy appliances; massage apparatus; psychological aptitude testing apparatus 90 19 20 Ozone, oxygen and aerosol therapy, artificial respiration or other therapeutic resp appa
