There are permanent magnets and superconducting magnets. Permanent magnets are Siemens, General Electric and Hitachi. There are many domestic brands, among which Gaoxinyi and Neusoft are famous. ...
The superconducting ones are Siemens, GE and Philips.
Upstairs and upstairs students, superconducting domestic products are really not installed. Dare you buy it? There is no equipment that is often guided in the medical industry, either permanent magnet or superconducting!