Usa City is the largest grain producing region in Oita Prefecture, and in the plains, rice, wheat, soybeans, and Ajiichi green onions are cultivated. In the mountainous areas of Ajimu and Innai, grapes and yuzu are also cultivated.

Facing the calm Buzen Sea, the diverse topography produces a variety of agricultural, forestry and fishery resources, and the area has been designated as a World Agricultural Heritage Site. Urban development through food and sixth-order industrialization that takes advantage of this soil is thriving.

Therefore, in 2013, we established the Usa Brand Certification System. Processed products (sixth products) using primary products in the city are rigorously examined in accordance with certification standards, and so far more than 1 particularly excellent products have been certified as the "Usa brand."

Usa brand certified products are local products that are full of the power of Usa.