Professional Thermal Flask: Premium 304 Food-Grade Stainless Steel Construction Crafted from high-quality food-grade 304 stainless steel, this thermal flask offers exceptional durability and rust resistance while preventing flavor retention or transfer. The double-walled vacuum insulation technology maintains optimal temperatures for up to 12 hours, eliminating condensation and ensuring beverages stay perfectly hot or cold. Designed with versatility in mind, the flask features two interchangeable spouts: a precision spout for controlled mate brewing and a regular spout for everyday pouring. The sophisticated matte finish and ergonomic design with comfortable handle provide both style and functionality, making it ideal for various settings. Perfect for tea merchants and importers seeking premium beverage solutions, this thermal flask offers professional performance for commercial use while maintaining the pure taste of premium teas. Its leak-proof construction and easy-to-clean design make it suitable for both retail display and customer use.zq20260205085553