Which brand of thermos cup is safe, double glass is not really glass, there is no other add, affect health?
Stainless steel material specifications, which 18/8 said that the stainless steel material composition containing 18% chromium, containing 8% nickel, reached the standard materials, in line with the national food standards is the green environmental protection product, rust and corrosion products. Ordinary stainless steel cup body color is pale and dark, if the brine into the concentration of 1% will produce rust after 24 hours, which contains some elements exceed the standard, the direct harm to human health.
Insulation cup is generally made of ceramic or stainless steel containers with vacuum layer made of water, the top cover, seal, vacuum insulation layer can make the liquid inside the slow cooling, in order to achieve the purpose of preservation.
Double glass also called light industrial glass, raw materials for high boron silicon has a high heat resistance, the main production of glass teapot, coffee cup, cup, cup of hot water, there are many domestic manufacturers.
