Hangzhou SDM Magnetics Co., Ltd is one of the professional suppliers of permanent magnets in China. Relying on an experienced team in our own manufacturing plant, Hangzhou SDM is specialized in providing various kinds of permanent magnets, including Sintered &Bonded NdFeB ,Cast&Sintered Alinico, Sintered SmCo Magnets and relevant Magnetics Assemblies such as pump couplings and holding devices.