How Is a 380ML Student Insulated Mug Designed for Students? A 380ml student insulated mug does not necessarily need the same stainless steel grade throughout its entire body. The inner liner and outer shell perform different functions, so manufacturers can select materials according to where each property is most important. A 316 stainless steel inner liner is suitable for direct beverage contact, while a 304 stainless steel outer shell provides...
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