How to Choose Baby's Thermos Bottle?
Thermos bottles are basically made of stainless steel. There are many kinds of stainless steel, 316, 304 and 201.
316 stainless steel: medical grade stainless steel, its corrosion resistance, easy processing and welding performance is better than 304, but the cost will be higher, many hospital medical equipment will be used, in recent two years the market for high quality requirements, 316 stainless steel thermos bottles are also more and more people choose to buy.
304 stainless steel: At present, it is the most widely used stainless steel in the market. The stainless steel contains 18% chromium and 8% nickel. It is also used in food grade. But its corrosion resistance, oxidation resistance and processing are worse than 316, so its cost is lower than 316.
201 stainless steel: acid resistance, alkali resistance is much weaker than grade 304, mostly used in the production of industrial steel pipes, decoration materials, watch case, watch strap, etc. Due to the low cost of 201 materials, unscrupulous businessmen are used to make edible utensils. If they are heated frequently or used for a long time, they will easily produce rust, which is harmful to health. Please pay attention to it.