How to choose stainless steel insulation Cup

In the purchase of stainless steel insulation Cup, use the following methods to identify the quality of insulation cup.The simple recognition of vacuum insulation Cup performance: the boiling water is injected into the cup to tighten the stopper and cup cover, in 2-3minutes later, touch the cup body of the outer surface of the cup, if feel warm phenomenon, indicating that this product is not a vacuum degree, can achieve very good insulating effect. You should not buy.Recognition of its sealing performance: in the insulation cup is injected into the water after tightening stopper and the lid, put Bei Ziping on the desktop when no water leakage, the cup upside down when anhydrous drops out, the cup cover and the cup mouth can easily spin smooth, and no gap.Identification of plastic parts quality: plastics industry of food grade plastic and ordinary plastic, two kinds of plastic in the performance of a large gap. Food grade plastic smell small, no burr on the surface bright and smooth, long service life and is not easy to aging. While the ordinary plastic and recycled plastic smell is relatively large, surface burr and dark color, plastics are also vulnerable to aging, easy to break.Simple recognition capacity: insulation cup depth and shell height in uniform, and in full compliance with the capacity and the nominal value. Some poor quality cup in the cup with a sand or cement block to add the weight loss. Therefore, do not think that insulation Cup ( pot) heavier is good cup.