Intervention agencies shall buy in carcases or half-carcases, fresh or chilled (Common Customs Tariff subheading ex 02.01 a iii a) 1); they may buy in belly of pork (streaky), fresh or chilled (Common Customs Tariff subheading ex 02.01 a iii a) 5), and unrendered pig fat, fresh or chilled (Common Customs Tariff subheading ex 02.05 a i).