This hot water dispenser liner combines a foodgrade stainless steel inner liner with a multilayer insulation system to provide reliable passive temperature retention for beverages, without any heating element. Foodgrade stainless steel liner: Made from foodgrade stainless steel precision material. It is doubleinsulated and can keep warm for 612 hours. Note: only physical insulation, no heating function. Multilayer insulation system: Built with a polyurethane rigid foam system, which has low thermal conductivity. The insulation effect is strong for both heat preservation and cold preservation, making it suitable for holding milk tea, coffee, juice, and similar beverages. Leakproof design: The tea urn is 100% leakproof, featuring a sealed silicone ring and a sealed clip design to prevent water leakage and effectively reduce heat dissipation to keep beverages at temperature. Construction and durability: Large cover for easy cleaning and filling; side lock design ensures strong sealing and enhanced insulation; stainless steel shell and liner are temperature resistant, rust, and easy to clean. Use scenarios Office and workplace beverage station: Ideal for selfserve coffee, tea, or juice in break rooms. Keeps drinks warm for hours without electricity, reducing wait times during busy periods. Catering, events, and conferences: Suitable for buffets and receptions where milk tea, coffee, or juice are served. The leakproof design helps prevent spills and maintains beverage temperature throughout service. Home gatherings and hospitality settings: for parties, gatherings, or hotel lobbies where guests can help themselves to warm drinks. Durable stainless steel construction and easy cleaning support frequent use.