Yes, China White Quartzite can be used for exterior applications in very dusty climates. Quartzite is a natural stone that is exceptionally durable and resistant to weathering, making it suitable for various outdoor installations, including in dusty environments. It has a high resistance to scratching, staining, and fading, which makes it an ideal choice for exterior construction projects in such conditions. However, regular cleaning and maintenance may be necessary to keep the stone looking its best in dusty climates.