Yes, Chinas G380 Granite can be used for exterior applications in very dusty climates. Granite is known for its durability, strength, and resistance to weathering, making it suitable for outdoor use. Additionally, it is resistant to scratching, staining, and erosion, which would be beneficial in dusty environments. However, it is always recommended to consult with a professional or supplier to ensure the specific granite type is suitable for the intended application and climate conditions.