1, look at the appearance
Looking at the appearance does not represent the size and appearance of the bottle, but carefully observe whether there are obvious or hidden damaged parts and whether the bottle cap can be closed correctly, that is, how tight it is. If you can't see it, we can put some water in it and test the bottle upside down. If there is a problem, water will definitely flow out along the gap, then we can rule it out.
Step 2 smell
When we get a water bottle, we can smell it, especially the inside of the bottle mouth, and even choke ourselves. Obviously, this is an unqualified product. If there is no problem, let's see if it smells when it meets high temperature. If it still stinks, it won't work. If there is no smell, we can buy this product.
Step 3 read the product manual
Each product has a product manual, which introduces the material and performance of the product. The relative quality of products produced by regular manufacturers must be guaranteed. If there is nothing, then its quality needs to be studied.
Whether it is a glass, a ceramic cup or a stainless steel water bottle, it is best to choose from these three aspects. In fact, the selection rate of transparent plastic water bottles is so high because it is affordable and relatively cheap. Therefore, if you want to choose a qualified plastic water bottle, you need a pair of discerning eyes. Drinking water is for health. If you choose unhealthy drinking tools, it will affect your health, so everyone should know this problem in advance.