Electric permanent magnet crane relies on its supporting controller to input positive and negative instantaneous current to control charging and demagnetization, which is relatively convenient to control and suitable for multiple cranes to lift large workpieces at the same time.
Domestic manufacturers of magnetic jacks are mainly concentrated in Shandong, Yueyang, Ningbo and Guangdong, and each enterprise has its own advantages and disadvantages. For example, the key to purchasing is communication and inspection.