The global transition toward electrification, green energy, and high-precision automation has exponentially accelerated the demand for high-performance rare-earth permanent magnets. Among standard configurations, the Neodymium Magnet 20mm specification serves as a critical dimensional baseline across automotive EPS systems, robotics harmonic drives, wind turbine sensors, and advanced consumer electronics. As top-tier suppliers navigate stringent global supply chain frameworks, manufacturing excellence relies heavily on vertical integration—from raw material separation to advanced powder metallurgy and precision sintering.
Future innovations in NdFeB technology focus on grain boundary diffusion (GBD) processes to minimize heavy rare-earth elements (like Dysprosium and Terbium) while maintaining high intrinsic coercivity ($H_{cj}$) at elevated operational temperatures up to 200°C. Zhejiang Laysun Magnetics Ltd. spearheads this technological shift through state-of-the-art magnetic alignment systems, multi-layer anti-corrosion plating (Nickel-Copper-Nickel, epoxy, and parylene), and automated dimensional sorting, guaranteeing ultra-low magnetic tolerance margins for next-gen engineering applications.
Founded in 1999 with over two decades of refined industrial mastery, anchored by strict ISO and API quality management protocols.
National high-tech enterprise status operating a massive 100,000 m² facility with 5,000 tons annual output capability.
Comprehensive technical guidance, custom prototyping, and robust multi-modal transport ensuring time-bound global deliveries.
Integrated into high-torque drive motors, regenerative braking systems, and automotive electronic power steering (EPS) units for superior energy efficiency.
Delivering high magnetic flux density for micro-servos, brushless DC motors, and high-precision spatial positioning actuators.
Powering advanced voice coil motors (VCM), smartphone MagSafe accessories, acoustic transducers, and energy-saving inverter compressors.
We manufacture 20mm neodymium magnets across a wide spectrum of grades from N35 up to ultra-high performance N52, as well as high-temperature resistant grades such as 35H, 42SH, and 38EH, customized according to your specific operational temperature requirements.
Standard surface treatments include Ni-Cu-Ni (Nickel-Copper-Nickel) plating, epoxy coating, zinc, and gold plating. For humid or marine environments, specialized multi-layer protective coatings are applied to ensure exceptional longevity.
Our facilities adhere rigorously to ISO9001, ISO14001, and TS16949 standards. Every batch undergoes rigorous flux testing, dimensional inspection via optical sorters, and salt spray corrosion testing before shipment.
Thanks to our large-scale production capacity of 5,000 tons annually and advanced automated machinery, standard prototyping takes 3-7 days, while bulk commercial production typically requires 15-25 days depending on specification complexity.
Laysun Magnetics
