Integrated aluminum cases or one piece aluminum cases are typically classified into four types: tool cases, instrument cases, equipment cases, and storage cases. Tool cases are designed for storing and carrying repair tools, ideal for fieldwork. Instrument cases feature protective padding for delicate equipment, offering shock and water resistance. Equipment cases ensure safe transport for electronics or medical devices. Storage cases focus on multifunctional organization for daily or specialized items. Their one-piece construction provides lightweight durability and strong protection, making them widely used in industrial, medical, and aerial fields.