The respondent (Kemtek) imported rolls of photosensitised emulsion on aluminium substrates in various thicknesses, up to 2,500m long and 1,260mm wide, which were used to produce lithographic printing plates for the printing industry. After importation, the rolls were decurled, trimmed and cut into individual sensitised plates. The second appellant (First Graphics) manufactured similar plates domestically in South Africa. The first appellant (Commissioner for Customs and Excise) determined that the imported product should be classified under tariff heading 37.01 of Schedule 1 to the Customs and Excise Act 91 of 1964, attracting 15% customs duty. On appeal to the Transvaal Provincial Division, McCreath J set aside this determination and declared the imported product fell under tariff heading 37.02, attracting no duty. The Commissioner and First Graphics appealed to the Supreme Court of Appeal.