Catalytic agents; Enzymes for the food industry; Industrial chemicals; Leather-waterproofing chemicals; Oils for preparing leather in the course of manufacture; Paper pulp; Photographic paper; Plant growth nutrients; Sumac for use in tanning; Tanning agents for use in the manufacture of leather; Tanning agents for use in the manufacture of leather, namely, oils for currying leather; Tanning agents for use in the manufacture of leather, namely, oils for preparing leather in the course of manuf...