3.2L Stainless Steel Insulated ThermoS 991

Stainless Steel thermos bottles with glass refills

• High material: stainless steel body, plastic stopper, glass refills
• Capacity: 3.2L
• Keep beverage hot for 24 hour
• Customized logo are welcome
• Handle can be made on it
• Inner packing:1pc/the color box with pp bag
• Outer packing:12pcs/ctn
• After 24 hours heat preservation in accordance with international standards
• Keep beverage hot or cold for 24 hours

How to test insulation quality of the vacuum flask?

• Check the inside (that is, the suction mouth) is intact, if there is a break between layers is damaged inside the vacuum, lost heat preservation ability.

• Look inside presence of blowout trace.

• See if bottle is round. If you don't round bottle, bottle stopper can't seal, will reduce the heat preservation ability.

•Fill it with boiling water and cap it.

•Measure its temperature with a thermometer every hour or two and see what the temperature graph looks like

My company production is not only good quality, and economy, and beautiful.