Excise duty exemption for maplitho and kraft paper supplied to braille presses on authorised indent. Maplitho paper and kraft paper within Chapter 48 are exempt from the whole excise duty when supplied to a braille press against an indent placed by the National Institute for Visually Handicapped, Dehradun; the exemption is granted under the executive's statutory power as a public interest measure and applies only where the supply meets that indent condition.