The regulations and standards for using ceramic fiber products vary by region and application. In the United States, the Occupational Safety and Health Administration (OSHA) sets permissible exposure limits for airborne fibers. The American Society for Testing and Materials (ASTM) provides standards for product testing and performance. The European Union has specific directives, such as the REACH regulation, which controls the production and use of chemical substances. Manufacturers and users must comply with local and international standards, such as ISO standards for product quality and safety. It's crucial to consult the latest regulations and standards relevant to the specific region and industry to ensure compliance and safe use of ceramic fiber products.