Product name: Double-layer vacuum insulation stainless steel shaker cup 750ml LOGO process: laser engraving, silk screen printing Color: customizable Style: Creative Applicable gift-giving occasions: trade fairs, advertising promotions, business gifts, welfare gifts Cup body material: double-layer inner 304 outer 304 stainless steel, heat preservation for 6-12 hours, ice preservation for 12-24 hours. Cup lid: food grade PP plastic + 304 stainless steel ring.