Laysun Magnetics
Explore our high-performance sintered and bonded rare-earth magnetic solutions engineered for global industrial excellence.
A comprehensive research-grade analysis of rare earth NdFeB permanent magnets in next-generation manufacturing.
In the modern era of high-precision engineering, Neodymium Iron Boron (NdFeB) magnets, widely referred to as Promag Neodymium Magnets, represent the pinnacle of permanent magnetic technology. Since their commercialization in the 1980s, these rare-earth magnets have revolutionized countless industries by packing unprecedented energy density into micro-sized footprints.
The global transition toward green technologies—such as electric vehicles (EVs), wind turbines, high-efficiency industrial motors, and advanced consumer electronics—has triggered an exponential growth curve in demand. These permanent magnetic systems operate as core drivers of energy transformation. Unlike traditional ferrite or AlNiCo alloys, Neodymium magnets offer high magnetic remanence ($B_r$), extremely high coercivity ($H_{cj}$), and maximum energy density ($(BH)_{max}$), making them indispensable for systems that require high performance and low weight.
"The dynamic transition to Net-Zero emissions across global manufacturing platforms is entirely dependent on the scalable supply of high-grade NdFeB magnets."
Video Demonstration: Advanced manufacturing, orientation, and quality validation at Laysun Magnetics' state-of-the-art facility.
Global logistics are facing shifting raw material prices. Zhejiang Laysun Magnetics mitigates pricing risk by optimizing vertical integration from direct ore sourcing to processing.
Operating temperatures up to 220°C require heavy rare-earth elements (Dy, Tb). Modern Grain Boundary Diffusion (GBD) optimizes performance while keeping costs contained.
By controlling the grain refinement and introducing highly specialized alloying elements, we achieve structural integrity that resists micro-fracturing under high centrifugal loads.
Your trusted global partner in advanced magnetics engineering since 1999.
Founded at the turn of the millennium in 1999, Zhejiang Laysun Magnetics Ltd. has evolved from a local visionary workshop into a nationally recognized high-tech giant. Our core production facilities, covering over 100,000 square meters, are located in the resource-rich area of Suining, Sichuan. This geographic positioning grants us direct logistical and supply chain access to critical rare-earth oxides, ensuring consistent batch stability and price resilience for our worldwide clientele.
Through continuous capital investment in research and development, we specialize in high-grade sintered NdFeB magnets, bonded magnet configurations, and comprehensive magnetic assemblies. In order to serve the rapid global evolution of electric vehicles (EVs), robotics, and high-frequency communication, we maintain strict quality control loops that govern our production from powder metallurgy to precision plating.
Why sourcing NdFeB from China guarantees superior cost-to-performance ratio and production scaling.
By situating our primary manufacturing base in Suining, Sichuan, and our corporate export headquarters in Hangzhou, Zhejiang, we leverage a dual-hub framework. Sichuan offers abundant clean hydroelectric energy, reducing our carbon footprint during high-energy sintering operations, and direct access to heavy rare earth mining deposits. Zhejiang gives us direct connectivity to international logistics networks, shipping ports, and advanced industrial supply rings.
Our Suining factory utilizes advanced automation at every phase:
Did you know? Our annual sintering output of 5,000 tons allows us to serve large-scale OEM orders from tier-1 automotive and consumer electronic giants, ensuring stable lead times and continuous component availability.
Precision-engineered configurations of permanent rare earth Neodymium magnets for specialized engineering applications.
At Zhejiang Laysun Magnetics, our business operations are anchored on four critical columns: Quality, Credibility, Technology, and Innovation. We believe that producing permanent magnets is not just a simple manufacturing routine; it is an science-driven effort to enhance electrical machine efficiencies and mechanical work outputs.
Our dedication to technological leadership drives us to investigate new boundaries in surface finish options, multi-layered metal coating options (such as Ni-Cu-Ni, Epoxy resin, Zinc, and Passivated barriers), and anti-corrosive chemical solutions. This ensures that even under harsh marine conditions, highly corrosive automotive fluids, or extreme heat spikes, our magnets perform reliably.
As environmental regulations globally restrict carbon intensity and heavy metal contamination, Laysun Magnetics has established robust environmental protocols. Our factory incorporates recycled wastewater systems, automated exhaust air purification during mechanical grinding, and clean hydrometallurgical recycling programs. By refining processes and minimizing Dy/Tb usage, we offer eco-certified permanent magnets that meet EU RoHS, REACH, and critical OEM sustainability standards.
To remain at the vanguard of rare earth materials science, developing zero-loss magnetic assemblies and micro-structured permanent magnets that drive energy-efficient technologies worldwide.
How Laysun Magnets empower sectors demanding extreme performance and structural robustness.
Headquartered in the technological and e-commerce hub of Hangzhou, Zhejiang, and backed by our massive Suining, Sichuan production works, Zhejiang Laysun Magnetics Ltd. provides immediate and high-capacity export lines to Europe, North America, Southeast Asia, and beyond. Our localized representation structures and distribution alliances guarantee that engineering teams receive design feedback within 24 hours.
Zhejiang Laysun Magnetics Ltd. Headquarters
Hangzhou City, Zhejiang Province, China
We adhere to strict engineering validations to deliver high-reliability permanent magnets.
For industrial buyers, material traceability and testing consistency are critical. At Zhejiang Laysun Magnetics, every production batch is tracked from raw material input to the final magnetized state. We operate standard testing laboratories equipped with:
We satisfy international QA demands. Our processes are qualified under:
Certified Operations:
API 6D, API 607, CE, ISO 9001, ISO 14001, ISO 18001, TS (IATF 16949)
If you require copies of our validation credentials or custom test reports, please reach out to our team.
Expert engineering insights and supply answers regarding Neodymium Iron Boron permanent magnets.
The thermal threshold of sintered NdFeB is dictated by its chemical formulation, specifically the concentration of heavy rare earth elements like Dysprosium (Dy) and Terbium (Tb). These additives increase the material's resistance to demagnetization under thermal stress. Standard grades (N) function up to 80°C, while M, H, SH, UH, EH, and AH grades raise that threshold progressively, with AH grades operating up to 220°C.
Traditional processes distribute Dy or Tb uniformly throughout the magnet, which uses a high volume of these scarce elements. Grain Boundary Diffusion (GBD) diffuses these heavy rare earths along the outer grain boundaries of the sintered magnet. This concentrates the elements where they are most effective at preventing demagnetization, saving on material costs while maintaining high remanence.
For marine or outdoor applications, we recommend rubber coating or Epoxy resin plating. While standard Ni-Cu-Ni (Nickel-Copper-Nickel) offers good indoor protection, Epoxy provides a highly sealed barrier against salt spray and moisture, preventing oxidation of the core NdFeB material.
Sintered NdFeB is made by powder pressing and heat treatment, offering high magnetic output ($(BH)_{max}$ from 35 to 55 MGOe). Bonded NdFeB blends magnetic powder into a polymer binder. This allows for complex shapes and multi-pole magnetization profiles, though the energy density is lower (usually 4 to 12 MGOe).
We use automatic vacuum metallurgical systems, closed-loop powder sizing, and computerized magnetic sorting. Additionally, every shipment undergoes thorough hysteresis testing, dimension validation, and weight verification to ensure strict compliance with your specifications.
Standard sizes typically ship within 10 to 15 days. Custom dimensions requiring complex machining, specialized orientations, or custom plating formulations are generally delivered within 25 to 30 days, including full validation test reporting.
High-reliability, certified rare-earth systems built to withstand the demands of global industries.
Partner with Zhejiang Laysun Magnetics Ltd. for technical design review and volume pricing optimization.