Shanghai Open magnetic Ltd. ------ China magnet supplier, strong magnet supplier, nd magnet factory, Neodymium magnet manufacturer, rare earth magnet exporter. One of leading manufacturer and supplier of rare earth magnet, specializing in sintered NdFeB magnet researching, manufacturing, application and marketing. We manufacture and marketing sintered neodymium iron boron NdFeB permanent magnet with independent and owned patented technology for all clients from different countries and different application areas.