DAIRY PRODUCTS STORES (SIC 545) Establishments primarily engaged in the retail sale of packaged dairy products such as milk, cream, butter, cheese, and related products to over-the-counter customers. Ice cream and frozen yogurt stands are classified in SIC 5812 and establishments selling ice cream and similar products from trucks or wagons are classified in SIC 5963. Establishments primarily engaged in processing and distributing milk and cream are classified in SIC 2026.