High-Quality Permanent Magnetism Products & Companies

Empowering Next-Generation Industrial, Automotive, and Robotics Technologies with Rare Earth Neodymium (NdFeB) Systems

Premium Permanent Magnetism Products

Engineered to exact industrial standards. Explore our high-performance NdFeB materials, micro-assemblies, and specialized configurations.

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Zhejiang Laysun Magnetics Ltd.

Your Trusted Partner in Advanced Magnetic Engineering

Established at the turn of the millennium in 1999, Zhejiang Laysun Magnetics Ltd. has evolved from a pioneering visionary into a national high-tech enterprise. Over the past 25 years, our growth has been driven by a constant pursuit of innovation, research, development, and scalable production of high-performance rare earth Sintered Neodymium-Iron-Boron (NdFeB) magnets.

Headquartered in the technological hub of Hangzhou, China, with a centralized 100,000 square meter intelligent manufacturing facility in Sichuan, we bridge the gap between basic metallurgy and advanced micro-engineered assemblies. Our systems serve crucial functions globally—from high-efficiency electric vehicle (EV) drivetrains to industrial robotics and sensitive medical instrumentation.

25+
Years of Industry Leadership
100k
State-of-the-Art Factory Space
300+
Skilled Engineers & Employees
5k Tons
Annual Rare Earth Magnet Output

Macro Industry Solutions

Providing high-precision permanent magnetic solutions across critical global industrial and technology sectors.

Industrial Robotics

Robotics

High-torque, compact servo motor magnets enabling precision angular positioning.

UAVs & Drones

Drones & UAVs

Ultra-lightweight high-magnetic intensity components for propulsion systems.

Electric Vehicles

Electric Vehicles (EVs)

Traction motor magnets optimized for high demagnetization resistance.

Power Tools

Power Tools

Durable brushless DC motor magnets engineered for extreme stress loads.

Consumer Electronics

Consumer Electronics

Micro-magnets for smartphones, VCM actuators, and acoustic drivers.

Home Appliances

Home Appliances

Energy-efficient permanent magnet solutions for inverter compressors.

Built on Dynamic Engineering Pillars

Why Tier-1 industrial enterprises choose Zhejiang Laysun Magnetics Ltd. for high-volume permanent magnet assembly sourcing.

Quality & Material Authenticity

Every batch of Sintered NdFeB magnets undergoes complete characterization testing. We guarantee magnetic properties, density, and structural integrity.

Large-Scale Industrial Capacity

Spanning over 100,000 m² in Sichuan, our facilities process rare earth elements directly, enabling an annual output of over 5,000 tons of high-grade magnets.

Application-Specific Optimization

We work directly with OEM partners to supply tailor-made dimensions: from micro ring configurations to heavy-duty block assemblies for EV drivetrains.

Global Regulatory Compliance

Full conformance to global environmental and quality standards including REACH, RoHS, ISO9001, ISO14001, and API certified guidelines.

Expert R&D Engineering

Our workforce features metallurgical scientists dedicated to pioneering next-generation magnetic systems and micro-assembly optimization.

Modern Sintered Neodymium Factory Production Line

China Factory 4.0: Sourcing Resilience & Material Control

The rare earth permanent magnet supply chain demands strict process control. Zhejiang Laysun Magnetics Ltd. has designed its Sichuan manufacturing facility around the principles of Industry 4.0 to ensure material stability and pricing predictability.

By integrating automation across key processing steps, we maintain tight control over quality:

  • Automated Raw Material Blending: Vacuum induction melting furnaces ensure precise stoichiometric ratios of Neodymium, Iron, Boron, and dopants (Dysprosium, Terbium, etc.).
  • Oxygen-Free Fine Jet Milling: High-pressure nitrogen gas jet milling processes output sub-micron monocrystalline powders under 5 ppm oxygen control, preventing early oxidation.
  • Advanced Magnetic Alignment Pressing: Computer-monitored hydraulic aligning presses enforce precise orientation vectors across axial, diametrical, or multi-polar layouts.
  • Environmentally Controlled Sintering: Automated, multi-zone vacuum sintering ovens guarantee uniform densification and grain boundary structural integrity.

Located near resource extraction and refining hubs in Southwest China, our facility enjoys consistent access to critical heavy and light rare earth elements, protecting partners from major price volatility and material shortages.

Technology Roadmap & Future Outlook

The industrial demand for rare earth permanent magnetism is rapidly evolving. High-efficiency motors in electric vehicles and heavy industrial actuators require magnets that deliver higher maximum energy products $(BH)_{max}$ while remaining highly resistant to heat-induced demagnetization. To meet these demands, Zhejiang Laysun Magnetics Ltd. is actively pursuing three core technology directions:

Grain Boundary Diffusion (GBD)

Traditional permanent magnets require blending Dy or Tb throughout the raw alloy to survive high heat. This process increases raw material costs. Our GBD technology diffuses Dy/Tb selectively along the crystal boundaries after sintering, maintaining a high remanence ($B_r$) while boosting coercivity ($H_{cj}$) efficiently.

Ultra-High Thermal Stability

Automotive EPS and powertrain motors run at elevated continuous temperatures. We are developing high-coercivity materials (grades 52UH, 50EH, and 45AH) designed to operate reliably at temperatures up to 220°C - 240°C without experiencing irreversible demagnetization.

Advanced Coating Technology

Sintered NdFeB is prone to atmospheric corrosion. Laysun Magnetics continues to refine corrosion-resistant coatings, including multi-layer electroplated Ni-Cu-Ni, Zn (Zinc), high-thickness epoxy, and spray-applied Parylene coatings designed for marine environments.

Our commitment to these technology directions ensures that Zhejiang Laysun Magnetics Ltd. remains at the forefront of the permanent magnetism market, delivering high-performance, cost-effective solutions for challenging applications worldwide.

Localization Support & Global Compliance

Global logistics and regulatory compliance are essential for seamless B2B integration. As an established exporter, Zhejiang Laysun Magnetics Ltd. provides complete support for international procurement departments:

  • Automotive Compliance (IATF 16949 Ready): Our production processes align with the strict quality systems needed by automotive OEMs, providing robust PPAP documentation and traceability.
  • Environmental Safety (RoHS & REACH): All coatings and chemical processes are fully certified, ensuring compliance with EU and US market regulations.
  • Dedicated Export Clearance: With operations supported by our Hangzhou export logistics hub, we coordinate sea, air, and multimodal transport options directly to your distribution center.

We work closely with customers to support their supply chain localization efforts, offering warehousing options and custom delivery schedules to reduce lead times and optimize inventory levels.

Hangzhou Headquarters and Global Logistics Office Map

Quality Certificates & Compliance Standards

Operating under recognized international production certifications: API 6D, API 607, CE, ISO9001, ISO14001, and ISO18001.

Zhejiang Laysun Magnetics Quality System Certificate 1

ISO 9001 Quality Standard

Zhejiang Laysun Magnetics Environmental System Certificate 2

ISO 14001 Environmental Standard

Zhejiang Laysun Magnetics Safety Certificate 3

ISO 45001 / OHSAS 18001 Standard

Frequently Asked Technical Questions

Insights from our engineering department regarding NdFeB material properties, specification, and custom manufacturing processes.

1. What factors determine the max operating temperature of a Neodymium magnet?
Operating temperature limits are primarily determined by the magnet's chemical composition—specifically the ratio of Heavy Rare Earth Elements (HREE) like Dysprosium (Dy) and Terbium (Tb). These elements help the crystal structure resist demagnetization at higher temperatures. Grades are categorized by suffixes: Standard (N) up to 80°C, Medium (M) to 100°C, High (H) to 120°C, Super High (SH) to 150°C, Ultra High (UH) to 180°C, Extremely High (EH) to 200°C, and AH up to 240°C.
2. How do you protect Sintered NdFeB from environmental corrosion?
Sintered NdFeB contains free iron, making it highly susceptible to oxidation. We offer several surface protection options to suit different environments, including electroplated multi-layer Nickel-Copper-Nickel (Ni-Cu-Ni) for general use, Zinc (Zn) for dry applications, Epoxy coating for organic solvent resistance, and chemical vapor deposited (CVD) Parylene for medical and highly corrosive environments.
3. What is Grain Boundary Diffusion (GBD) and how does it affect cost?
Grain Boundary Diffusion (GBD) is a post-sintering process that introduces Dysprosium or Terbium into the magnet's grain boundaries rather than throughout the entire alloy. This selectively increases demagnetization resistance where it is needed most, allowing us to produce high-coercivity magnets with lower quantities of expensive heavy rare earth metals, resulting in a more cost-effective product.
4. Can you manufacture custom orientations and shapes?
Yes. Using high-precision diamond cutting machines, wire EDM, and custom aligning molds, we produce shapes including blocks, cylinders, rings, discs, arcs, and multi-pole configurations. The magnetic orientation direction can be aligned axially, diametrically, or radially during the pressing process, depending on your application requirements.
5. What quality control steps are performed during production?
We perform comprehensive testing at each production stage, including inductively coupled plasma (ICP) testing to verify raw material composition, laser diffraction analysis for particle size distribution during milling, demagnetization curve testing to measure remanence and coercivity, and salt spray testing to verify coating durability.

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