How to pick a good product when wholesale Vacuum Flask? This is a topic that many small and medium-sized sellers are concerned about. Auland explains it for you:
The principle of vacuum flask is that it has a two-layer structure, with a high vacuum state in the middle, which can block convection and heat dissipation. At the same time, the added mirror function in the bottle can effectively block the heat loss caused by radiation, so that the liquid in the cup can maintain a certain temperature. The 4 specific techniques are as follows:
Fill the Vacuum Flask with water, tighten the lid, and turn it upside down. If the Flask does not leak, it proves that the Flask is well sealed.
Pour boiling water into the Flask, tighten the lid and leave it for a few minutes, then touch the body of the cup with your hands. If the body of the cup is hot, especially the bottom of the cup, it means that the vacuum Flask’s insulation performance is not good.
Observe the appearance and accessories of the Vacuum Flask. If the cup body and liner are smooth, there are no burrs and scratches, and the plastic accessories have no odor, it means the quality is good.
The 18/8 cup body means that the stainless steel material contains 18% chromium and 8% nickel. The materials that meet this standard meet the national food-grade standard and are green and environmentally friendly products, and the products are rust-proof and corrosion-resistant.
Through the use of these tips, you can choose a good quality Vacuum Flask, if you are looking for a vacuum flask manufacturer, please contact Auland.