Chinas Hekou White Jade Marble is a high-quality marble known for its white background and subtle grey veining. While it can be used for exterior applications, the suitability of this marble in very dusty climates depends on various factors.

Marble, in general, is a natural stone that is more porous compared to other building materials like granite or quartzite. This porosity may make marble more prone to stains and damage from dust particles in the air. In dusty climates, the constant deposition of dust can accumulate on the surface of the marble, potentially causing discoloration or dullness over time.

However, if properly sealed and maintained, Hekou White Jade Marble can be used in exterior applications even in dusty climates. Applying a high-quality penetrating sealer will help reduce the stones porosity, making it less susceptible to stains and damage from dust. Regular and proper cleaning will also be essential to prevent the dust from settling and potentially causing surface issues.

In such climates, it is recommended to clean the marble surfaces regularly using a soft brush or a non-abrasive cleaning agent. This will help remove the accumulated dust and prevent any adverse effects on the marbles appearance.

Ultimately, it is important to consult with a professional stone supplier or marble installer who can provide specific recommendations for using Hekou White Jade Marble in exterior applications in very dusty climates. They can assess the specific environmental conditions and advise on the best sealing and maintenance practices to ensure the longevity and appearance of the marble.