thermos bottle We are a specialist manufacturer of thermos flasks with plastic ... passed SGS,CE,FDA,LFGB test.2)we have ourself stainless steel workshop ,and we can make any design steel, OEM ... with warm water or washing up liquid before the first use or if it has not been used for some ... flask with soft sponge after use, removing all trace of food, do not immerse in water,do no use in a dish-washer. ...