Under 675 is classed information about the processing of animal skins and other coverings (such as shells, feathers) into finished materials such as leathers and furs; also the various types of raw and finished material, accessory materials used in processing, and scrap or waste materials and their processing. The manufacture of imitation leather is also included, under 675.92.
The production of goods from these finished materials is classed under 685.
BS 1000[675]:1983 history
1983BS 1000[675]:1983 Universal Decimal Classification - English full edition - Leather industry