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Recognition Methods of a High-quality Vacuum Water Bottle
Recognition of vacuum insulation 
Pour the hot water into the bottle and screw the lid, touch the body after 2-3 mins: if you can feel the obvious temperature, which means the product does not have good thermal insulation properties.

Recognition of sealing
There should be no leaking when screwing the lid after pouring the water. And the rotation should be flexible without any gap between the lid and rim.

Recognition of plastic accessories
Food grade plastic has got characters of light smell, bright lustre, long working life and good age resistance.
Recognition of stainless steel
The stainless steel in vacuum water bottle are using the food grade material with good rust protection and corrosion resistance. The common materials look whitish and dark, it can not be used as the interior material for its excessive metal elements.

Daily Usage & Maintaining 
1.Use the hot water or edible cleaning agent for cleaning and disinfecting before usage;
2.Please preheat or precool the bottle for 5-10 mins to make heat insulation effect better;
3.Do not fill the bottle too full in order to prevent scalding by overflowing hot water when screwing the lid;
4.Please take your hot drink slowly in order to avoid scald;
5.Screw your cup lid to keep it health and clean after drinking;
6.Please use soft cloth or the he diluted edible cleaning agent for cleaning; do not use alkaline cleaning agent or metal fabric;
7.The stainless steel may appear some rusty spot because of the iron-rich drinks, you can clean it after soaking it in diluted vinegar for 30 mins;
8.Please dry the vacuum bottle after cleaning it in order to prevent peculiar smell and stubborn stains.