Excise duty for Chapter 90 goods prescribed; specified exemptions consolidated and a per heading rate schedule applied. Prescribes excise duty effective rates and consolidates exemptions for goods under Chapter 90 by exempting listed goods from duty in excess of the specified effective rate in the annexed Table. The Table furnishes per heading outcomes: nil duty for certain optical and assistive devices and factory use parts; ad valorem duties for broad categories and specific items; and differentiated treatment for photographic cameras, cinematograph projectors, massage apparatus, orthopaedic footwear, artificial limbs, and hearing aid components.