About bubbles
The product is a mould process. If a small hole or air bubble in the inner core is a normal phenomenon, it is not a product quality problem and it can be used with confidence.
About style
Manual measurement, there may be an error of 1-3cm, which is normal.
Magnetic properties are the properties of matter, and the human body also has a certain magnetic property. It has been confirmed by scientific experiments that the use of magnetic substances and biomagnetic effects inside the human body can adjust various unbalanced or abnormal functional states in the human body to improve human health. Play a protective effect.
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