new bonechina vacuum flask 1) Features: double wall, vacuum 2) packing: each in white box or gift box new bonechina vacuum flaskPacking: 1pc/color box, ... ,Ni 8.0-10.5 3. Advantages of stainless steel vacuum flaska: Molding, soldering, Polishing, Packaging with 10 years’ ... and recyclede: Multiple sampling to test, they are double wall, could keep hot and cold for 24hours new bonechina vacuum flask