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Zhejiang Laysun Magnetics Ltd. - Engineering Rare Earth NdFeB Innovations Since 1999

Understanding Magnetic Separation in Daily Life

In modern industrial design and everyday technologies, magnetic separation is no longer just a laboratory concept. It represents a foundational technology vital to electronic refinement, green energy conversion, mechanical automation, and household intelligence. From separating impurities in global food supply lines to driving the magnetic arrays in standard smartphones, sintered NdFeB (Neodymium Iron Boron) materials act as silent enablers of modern living.

As a leading national high-tech manufacturer, Zhejiang Laysun Magnetics Ltd. specializes in translating complex magnetic physics into practical engineering solutions. We provide high-performance rare earth permanent magnets that meet demanding operating criteria across industries like automotive, clean energy, consumer technology, and manufacturing safety systems.

Zhejiang Laysun Magnetics Ltd.: Established in 1999

Pioneering the manufacturing and development of sintered NdFeB permanent magnets for a globally connected economy.

25+
Years Industry Experience
100k m²
Factory Area
300+
Expert Staff
5,000t
Annual Sintered Output

Our main manufacturing complex is situated in the high-tech industrial development zone of Suining, Sichuan, with regional sales headquarters based in Hangzhou, China. Laysun Magnetics coordinates large-scale raw material sourcing, automated metallurgical pressing, sintering, high-precision machining, and multi-stage surface finish coatings to ensure reliable product delivery.

Our core operating values—Quality, Credibility, Technology, and Innovation—guide our material development processes. Through continuous refinement of grain boundary diffusion (GBD) technology and magnetic circuit optimization, we supply high-performance rare earth components designed for demanding, long-term operation.

Localized Application Scenarios of Magnetic Separation in Daily Life

How high-grade Neodymium permanent magnetic arrays support smart consumer electronics, urban transport systems, and municipal water filtration lines.

Smart Home Application

Consumer Technology & Smart Devices

High-precision phone magnetic circle rings enable MagSafe accessory alignments and inductive wireless power transfer. Our specialized ring and disc NdFeB configurations are calibrated to restrict magnetic interference with sensitive internal circuitry.

E-mobility Drivetrain Application

Automotive Electrification (EV)

Zhejiang Laysun manufactures high-coercivity sintered NdFeB blocks that maintain structural and functional integrity at high operating temperatures. These are used in electric power steering (EPS) systems, main drive e-motors, and regenerative brake sensors.

Industrial Electric Vehicles

Industrial Automation & Material Logistics

Our heavy-duty magnetic lifters, rated for capacities up to 1,000 kg, use balanced magnetic fields to transport flat or cylindrical steel plates. This mechanical design requires no external power source, providing built-in failsafe protection.

Technical Roadmap and Future Outlook

Refining sintered NdFeB formulations for increased thermal limits, reduced heavy rare-earth content, and improved chemical stability.

The global demand for high-density magnetic materials is shifting toward extreme thermal limits, mechanical durability, and eco-conscious engineering. Zhejiang Laysun Magnetics Ltd. maintains an active research pipeline focusing on three core initiatives:

1. Grain Boundary Diffusion (GBD)

By diffusing heavy rare earths (Dysprosium, Terbium) along the grain boundaries of sintered magnets, we achieve high coercivity while keeping raw material usage and overall production costs manageable.

2. Nanostructured Coatings

To prevent oxidation in damp marine or under-the-hood environments, we have developed advanced electroplated Nickel-Copper-Nickel (Ni-Cu-Ni), protective chemical vapor deposition (CVD), and dense rubber coverings.

3. Sustainable Closed-loop Recycling

In response to global environmental regulations, we are establishing closed-loop recovery processes. These allow us to re-integrate post-industrial rare earth scrap into our standard production lines without degrading magnetic properties.

Through these process improvements, our research and design department aims to lower the thermal degradation curve of our standard product line. This ensures that even compact components used in automotive steering and drone motors provide consistent magnetic output over extended duty cycles.

China's Supply Chain Resilience & Manufacturing Efficiency

Leveraging domestic raw material proximity, scaled manufacturing automation, and established export logistics routes.

Global industrial supply chains demand reliability, chemical consistency, and cost containment. Zhejiang Laysun Magnetics Ltd. meets these requirements through our integrated manufacturing facilities in Sichuan. By positioning our primary production site near China's main rare earth mining and smelting zones, we reduce internal transport times and secure a stable supply of raw Praseodymium-Neodymium (PrNd) metals.

Our 100,000-square-meter facility utilizes automated processing lines for raw material mixing, strip casting, hydrogen decrepitation, jet milling, and isostatic pressing. This high level of automation ensures consistent mechanical and magnetic tolerances across large batches of up to 5,000 tons annually. This protects our global distribution partners from supply interruptions caused by material shortages.

Zhejiang Laysun Magnetics Global Supply Network Map

Global Product Application Segments

Sintered NdFeB permanent magnets configured for industrial energy generation, robotic positioning, and automated drone flight dynamics.

Industrial Robot Application

Robotics

Our NdFeB blocks provide high torque-to-weight ratios, allowing robotic joints and actuators to make precise, repeatable movements under heavy loads.

Aerospace Drone Application

Drones & UAVs

Lightweight motor designs rely on high-grade sintered magnets to maximize lifting capacity, minimize current draw, and extend drone flight times.

Industrial Power Tool Application

Power Tools

Brushless motor systems in industrial drills and grinders use high-temperature resistant arc segments to maintain continuous power output.

Home Application

Home Applicatons

Designed for daily residential use, our magnets power magnetic water systems, door seals, laundry machine drives, and quiet kitchen appliances.

Localization Support & International Compliance Guarantees

Verifiable quality control standards including API 6D, API 607, CE, ISO9001, ISO14001, ISO18001, and TS/IATF 16949 certification.

ISO Quality Certificate Laysun CE Standard Certificate Laysun SGS Environmental Safety Compliance

For heavy industrial and safety-critical uses, material traceablity and quality control are essential. Zhejiang Laysun Magnetics Ltd. maintains active certifications for API 6D, API 607, CE, ISO9001, ISO14001, ISO18001, and TS/IATF 16949 standards. Every batch of magnets we produce undergoes thorough testing before shipment, including demagnetization curves, salt spray testing, and mechanical dimension checks.

We provide full documentation for global shipments, including REACH, RoHS compliance declarations, and material safety data sheets (MSDS). This documentation simplifies customs processing and fits easily into the quality assurance systems used by our international customers.

Frequently Asked Questions: Technical and Sourcing Insights

Expert technical answers regarding sintered Neodymium magnetic properties, customization limitations, thermal handling, and transport safety.

Q1: What determines the maximum operating temperature of a Neodymium magnet?
The thermal tolerance of Neodymium (NdFeB) magnets depends on their chemical composition, specifically the presence of heavy rare earths like Dysprosium (Dy) and Terbium (Tb). These elements increase the magnet's intrinsic coercivity (Hcj), preventing demagnetization at higher temperatures. Standard grades operate up to 80°C, while specialty high-coercivity grades (such as SH, UH, EH, and AH) can function in environments up to 220°C.
Q2: Why is plating or coating necessary for sintered NdFeB magnets?
Sintered NdFeB has a high iron content, making it susceptible to oxidation and corrosion in humid conditions. Applying a protective finish, such as electroplated Nickel-Copper-Nickel (Ni-Cu-Ni), Epoxy, Zinc, or external rubber casing, forms a barrier against moisture and chemical exposure. This protective layer ensures the magnet retains its performance over its service life.
Q3: How does Zhejiang Laysun Magnetics control dimensional tolerances during manufacturing?
Because sintered magnets are hard and brittle, we form them close to their final shape using isostatic pressing before sintering. After heat treatment, we grind and cut the magnets using specialized diamond-wheel machinery and wire electrical discharge machining (EDM). This process allows us to maintain tight tolerances down to ±0.05 mm on standard shapes.
Q4: Are there specific safety protocols for shipping strong Neodymium magnets internationally?
Yes, air transport regulations require that magnetic shipments do not interfere with aircraft compasses. For international air freight, we package the magnets with iron shielding sheets to contain the magnetic field within the box. We also provide official magnetic test certifications to ensure smooth clearance through customs.

Partner With Zhejiang Laysun Magnetics

For engineering consultation, custom material designs, or wholesale pricing lists, contact our technical sales team. We respond to all inquiries within 24 hours.

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