Yes, Chinas Pergola Quartzite can be used in exterior applications in cold climates. Quartzite is known for its durability, strength, and resistance to extreme weather conditions, making it suitable for use in areas with cold climates. It is frost resistant, meaning it can withstand freezing temperatures without cracking or deteriorating. Additionally, quartzite is also resistant to chemicals and staining, making it a popular choice for outdoor applications. However, it is always recommended to consult with a professional or supplier to ensure that the specific type and quality of Pergola Quartzite you are considering is suitable for your particular climate and application.