They are available online on Taobao, JD.com, and Alibaba, as well as offline hardware stores.
1. Taobao.
Log in to Taobao (taobao.com), enter "magnet" in the search bar, and click "Search" to display multiple sellers.
2. Jingdong.
Log in to JD.com (jd.com), enter "magnet" in the search bar, and click "Search" to display a variety of products.
3. Alibaba.
Log in to Alibaba (1688.com), enter "magnet" in the "Source" column, and click search.
You can list multiple merchants.
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4. Hardware store.
Magnet stones are one of the commonly sold items in many Wujian stores.
Magnets
The components of magnets are iron, cobalt, nickel and other atoms. The internal structure of the atoms is relatively special and they have magnetic moments themselves. Magnets can generate a magnetic field and have the property of attracting ferromagnetic substances such as iron, nickel, cobalt and other metals.
Magnet types: Shape magnets: square magnets, tile-shaped magnets, special-shaped magnets, cylindrical magnets, ring magnets, disc magnets, bar magnets, magnetic frame magnets, attribute magnets: samarium cobalt Magnets, NdFeB magnets (powerful magnets), ferrite magnets, alnico magnets, iron chromium cobalt magnets, industry magnets: magnetic components, motor magnets, rubber magnets, plastic magnets, etc.
Magnets are divided into permanent magnets and soft magnets. Permanent magnets are added with strong magnetism to align the spin of the magnetic material and the angular momentum of the electrons in a fixed direction. Soft magnets are added with electricity. (It is also a method of adding magnetism) When the current is removed, the soft iron will slowly lose its magnetism.
Reference: Baidu.com—Baidu Encyclopedia Entry: Magnet