Capacity: 300mlSize/weight: 9.3×7.8×20.2cm/300gCarton: 54.5×44×46cm/0.110m³QTY: 40pcsN.W./G.W.: 12.0/15.0kgs1. Core Concept and Key Technical PrinciplesThe wholesale 300ml insulated stainless steel red wine mug is a functional response to changing beverage consumption environments, where temperature stability, durability, and reuse increasingly replace fragile, single-use, or purely decorative drinkware. At its core, this product applies thermal insulation engineering to a stemmed wine tumbler format, traditionally associated with glass, while integrating industrial-grade materials suitable fo...