When purchasing stainless steel lunch boxes, consumers should carefully check whether the materials and steel grades used are marked on the outer packaging. At present, there are three kinds of stainl...
First, look at the label identification, whether it is detailed and scientific.Second, look at the material. 304 and 316 stainless steel are preferred for the inner tank, but other materials can also ...
Will the tea in a thermos cup for too long poison people?It is rumored that tea scale will be produced after making tea, which will corrode the thermos cup and precipitate heavy metals, eventually lea...
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