1) double wall thermo flask,ss18/8,ss18/0, 2) specialized in flaskmany years 3). ... is available 4)keep warm and cold double wall thermo flask we have four capacity:350ml,500ml,you can print logo ... :1) stainless steel vacuum flask2)1.specialized in the vacuum flask for many years3).OEM is available 4)keep warm and ... , 8.am to 17.pm picture: 350ml double wall thermo flask