Come and Check Our Branding Solutions.The bottom of the teapot is upgrade three-layer bottom design.The innermost layer is food-grade 304 stainless steel,which has anti-rust effect.The middle layer of aluminum has fast heat transfer and heating speed.And the outermost layer of 430 stainless steel with more magnetic conductivity,it is heating faster and evenly heated when be used on an induction cooker.It is more rust-proof and water-leak-proof than ordinary single-layer bottoms.The stainless steel electrolysis process is used in the interior of kettle to ensure that the teapot is rust-resistant and corrosion-resistant.When you focus on housework,movies,music or anything else,the loud whistle can quickly attract your attention and remind you to turn off the fire in time.LOGO can be customized. Pls check inventory and detailed info before placing your orders.