Which company produces electric permanent magnet suction cups for milling machines with better quality?

The electric permanent magnet suction cups of Qingdao Li Mi Electric Co., Ltd. are recommended. Their electric permanent magnet suction cups are of very good quality. They can be powered off for 30 years without losing magnetism, and can effectively save more than 90% of electricity, with stable quality. Is a professional manufacturer of electric permanent magnet suction cups for machine tool accessories in China, and has successfully served many well-known domestic enterprises such as Sany Heavy Industry, Dalian Machine Tool and China FAW.