Hengdian Kim Dae-magnetic solenoid factory ----- invention when the invention of the electromagnet was originally found in principle from the beginning of the electromagnet. In 1822, France's two physicists found 阿拉格 and 吕撒柯 first electromagnet principle, they found that if a piece of iron wire NdFeB laps interesting quote in the test facility, and to wire for charging, that piece of iron wire was immediately surrounded it was magnetized. Hengdian Kim Dae-magnetic Factory ---- magnet manufacturers introduced products, hard and brittle fragility magnet not cold, must be made by casting or sintering process. Magnet with high coercivity, is very suitable for the permanent magnet material. Magnet manufacturer Hengdian Kim Dae-magnetic Factory is a professional production of permanent magnet products manufacturers. Main NdFeB NdFeB factory wholesale, magnet, magnets, magnet series, ring magnets, NdFeB permanent magnet materials of high quality plants, magnetic, bonded NdFeB, mahjong magnets and other products. NdFeB local factory, good quality gold large magnetic plant, Guangdong NdFeB factory by large magnetic Hengdian gold plant. Hengdian Kim Dae-magnetic Factory (www.jjdct.cn) is an industry leader in Jinhua, Zhejiang, electronics, electrical products manufacturing equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs . In the Kim Dae-magnetic plant leadership with the staff warmly welcome all inquiries negotiations to create a large magnetic gold plant a better future.