Double Wall Stainless Steel Vacuum Flask 350ml

 

Name	stainless steel vacuum flask
Volume	350ml	or as client require
Material	304 Stainless Steel	food grade and eco-friendly
Color	blue , red , white	Can also accept customize
Payment	T/T ,Western Union
Shipping way	FedEx ,DHL , EMS ,TNT	by sea and by air is also welcome
Logo	customize color
MOQ	1pcs if we have stock	1000 pcs if you need design your own logo
others	keep hot and keep cold

1, thermal insulation properties easy identification method:

Pour the boiling water over the clockwise tighten cork or lid mug after 2-3 minutes apart from the body surface by hand touch the cup,
If there is a significant body warm cup phenomenon, indicating that the product has lost its vacuum, can not achieve good insulation effect.

2, sealing performance recognition method:

in the cup, add water, clockwise tighten cork and lid, the cup flat on the table, should anhydrous leakage; lid and cup of screwing should be flexible, there is no gap .

3, the capacity of simple identification method:

the height of the depth of the liner and the shell basically the same (a difference 16-18MM) capacity consistent with the nominal value. Some poor quality mug in the cup add sand, cement blocks to compensate for the lack of weight. Myth: Cup (pot) heavier is not necessarily good.