i'm trying to find a Chinese-style THERMOS?

my fiance and I, who is tibetan, would like to buy a thermos like the type we use in asia. i’ve searched online but i can’t seem to find what i’m looking for. i’m NOT looking for the small thermos flasks with screw-on lids that everyone carries around with tea in them. i’m looking for the large kind. they are the type they often have in restaurant in china full of hot water. tibetans fill them with boiled water, butter tea, or sweet tea prepared at the beginning of the day and its kept warm all day to drink. some have either plastic corks or regular cork corks. they are usually plastic or stainless steel (i think?) painted on the outside, and they are glass on the inside. does anyone know where i can purchase one and have it delivered to my house!? thanks!