Chinas Golden Sand Slate can be used in exterior applications in cold climates. However, it is important to consider a few factors before deciding on its use.

1. Frost resistance: Golden Sand Slate should have good frost resistance to withstand the freezing and thawing cycles commonly experienced in cold climates. It is advisable to check the specific products frost resistance rating or consult with the supplier to ensure it meets the required standards.

2. Water absorption: Golden Sand Slate should have low water absorption properties to prevent water from seeping into the stone and freezing during cold temperatures. High water absorption can lead to cracking and deterioration of the slate in freezing conditions.

3. Slip resistance: In cold climates, exterior surfaces can become icy or slippery. It is essential to choose a slate variety that offers good slip resistance, ensuring safety when walking or standing on the surface.

4. Maintenance: Regular maintenance may be required in cold climates, as exposure to freeze-thaw cycles, de-icing salts, and other environmental factors can affect the appearance and longevity of the slate. It is necessary to follow proper sealing and maintenance practices recommended by the manufacturer to enhance durability.

Additionally, it is advisable to consult with a professional installer or industry expert who can provide specific guidance based on your locations climate and Golden Sand Slates characteristics.