Chinas Nayong Black Slate is a type of natural stone that is commonly used for various interior and exterior applications, including as a paving material. However, its suitability for use in very rainy climates depends on several factors.

In general, natural slate is known for its durability and water-resistant properties, which make it suitable for exterior applications in rainy climates. However, the specific performance of a slate product can vary depending on its quality, composition, and treatment.

Nayong Black Slate is often used for outdoor applications and can withstand rain to a certain extent. However, it is important to note that excessive or prolonged exposure to water, especially in very rainy climates, can lead to issues like erosion, staining, or color changes. It is crucial, therefore, to ensure proper installation and regular maintenance to maximize the longevity and performance of the slate.

Additionally, the specific conditions of the installation site, such as slope, drainage system, and exposure to direct sunlight, can also affect the performance of the slate in a rainy climate. Adequate slope and a proper drainage system should be in place to prevent water accumulation and ensure the slate remains intact.

Considering these factors, while Chinas Nayong Black Slate can be used for exterior applications in very rainy climates, it is important to consult with a stone supplier or a professional installer who can provide guidance specific to your location and project requirements.