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 ... 16-18,Ni 3.5-5, N 0.25max 18/8 stainless steel:C 0.08max,Mn 2.0max,Cr 18-20 ... ,Ni 8.0-10.5 3. Advantages of stainless steel vacuum flaska: Molding, soldering, Polishing, Packaging with ...