High-Quality Storing Neodymium Magnets Exporter & Factories

Empowering global heavy industries and scientific research with cutting-edge magnetic preservation technologies, certified processing, and high-coercivity rare earth materials.

Premium Rare Earth Magnets Range

Industrial grade sintered and bonded Neodymium magnets optimized for maximum durability, temperature resistance, and flux stability.

China Neodymium Pin Magnet – Plastic or Nickel coating Product, Exporter

China Neodymium Pin Magnet – Plastic or Nickel coating Product, Exporter

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Custom NdFeB Pot Magnet Style B with nickel coating Exporters, Quotes

Custom NdFeB Pot Magnet Style B with nickel coating Exporters, Quotes

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OEM NdFeB Pot Magnet Style C with nickel coating Company, Factory

OEM NdFeB Pot Magnet Style C with nickel coating Company, Factory

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China NdFeB Magnet Lifter - 1000KG Lifting Capacity with Strong Neodymium Magnets Company, Exporter

China NdFeB Magnet Lifter - 1000KG Lifting Capacity with Strong Neodymium Magnets Company, Exporter

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OEM NdFeB Arc Segment - Strong Motor Magnets for Generators and Wind Turbine Rotors Products, Product

OEM NdFeB Arc Segment - Strong Motor Magnets for Generators and Wind Turbine Rotors Products, Product

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Custom NdFeB Rubber Coated Magnet in different styles Factories, Suppliers

Custom NdFeB Rubber Coated Magnet in different styles Factories, Suppliers

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Buy Neodymium Block Magnet Supplier, Quotes

Buy Neodymium Block Magnet Supplier, Quotes

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China Multi-Poles Ring Magnets Made of Bonded NdFeB Manufacturer, Suppliers

China Multi-Poles Ring Magnets Made of Bonded NdFeB Manufacturer, Suppliers

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Critical Guidelines for the Preservation & Storage of Neodymium Magnets

Neodymium Iron Boron (NdFeB) magnets represent the pinnacle of modern magnetics technology, offering unmatched energy product (BH)max and coercive force. However, their unique physical and chemical characteristics demand scientific rigor during long-term storage and bulk shipment. Understanding these conditions prevents structural decay, oxidation, and irreversible magnetic degradation.

Environmental Factors Controlling Sintered NdFeB Degradation:

  • Moisture & Oxidation Prevention: Unprotected NdFeB contains highly reactive rare earth phases. If exposed to relative humidity exceeding 50%, grain boundary corrosion occurs, disintegrating the material into powder.
  • Thermal Thresholds & Demagnetization: Working temperatures must never cross the Curie Point (typically 310°C to 350°C). For standard NdFeB grades (e.g., N52), storage temperatures should remain below 40°C to mitigate thermal flux loss.
  • Stray Field Shielding: Due to their extreme magnetic force, bulk stored Neodymium magnets require magnetic containment. Specialized steel sheet lining (keeper plates) ensures no external fields interfere with transit systems or electronic components.

Zhejiang Laysun Magnetics: Explore our advanced laboratory operations and high-precision sintered NdFeB manufacturing facilities.

Corporate Profile: Zhejiang Laysun Magnetics Ltd.

An Industry-Leading National High-Tech Enterprise Shaping the Future of Permanent Magnets Since 1999

25+
Years Industry Experience
100,000㎡
State-of-the-Art Factory Area
300+
Expert Workforce
5000t
Annual Rare Earth Magnet Output

Our Legacy & Production Capability

Founded at the turn of the millennium, Zhejiang Laysun Magnetics Ltd. has rapidly evolved from a visionary startup into a recognized global pacesetter in rare earth magnetics. Headquartered in Hangzhou, Zhejiang, we run a massive, highly automated 100,000 square meter factory in Suining, Sichuan. This geographic distribution allows us to integrate raw material access with global logistics channels.

Specializing in the research, development, custom manufacturing, and international distribution of NdFeB components, we provide solutions that drive major technical systems. From high-speed electric vehicle (EV) drivetrains to industrial robotics, micro-voice coil motors (VCM), and wind turbines, our permanent magnets ensure precision energy conversion and long operational lifespans.

Zhejiang Laysun Magnetics manufacturing facility

Core Values

Quality, Credibility, Advanced Technology, and Continuous Innovation. These pillars guide our R&D processes, production floor management, and global customer support teams.

Commitment to Innovation

Pioneering the next generation of magnetics. We invest heavily in Dy-free and Tb-free grain boundary diffusion (GBD) technologies, achieving high-coercivity magnets with lower heavy rare earth dependency.

Our Global Vision

To power tomorrow's green transit and automated manufacturing systems with sustainable, ultra-reliable magnetic solutions engineered for high performance and efficiency.

Unrivaled Advantages of Chinese Neodymium Magnet Manufacturing

Why China remains the global cornerstone for advanced permanent magnet supply chains

01. Complete Supply Chain Integration

From raw earth mining and oxide separation to metallurgy, sintering, precision machining, and coating, Chinese suppliers provide a closed-loop system. At Laysun Magnetics, we manage this chain to secure raw material access, ensuring price stability and manufacturing continuity during market fluctuations.

02. Advanced Surface Treatment & Coatings

To counter the natural oxidation of rare earths, Chinese manufacturers have developed advanced protective coatings. We offer Ni-Cu-Ni electroplating, organic Epoxy coatings, Everlube, Gold plating, and specialized Rubber encapsulation. These protective barriers maintain magnetic stability in marine, chemically active, and high-humidity environments.

03. Scale and Precision Machining

Equipped with multi-wire cutting machines, automated wire electrical discharge machining (EDM), and high-precision CNC grinding facilities, we achieve dimensional tolerances as tight as +/- 0.02mm. This precision allows us to manufacture complex geometries, including thin-walled ring magnets and customized motor arc segments.

Global Industrial Trends in Permanent Magnetics

As the world transitions to carbon neutrality, the demand for high-efficiency rare earth magnets has surged. Three primary trends define the industry's trajectory:

Grain Boundary Diffusion (GBD) This technology diffuses Dysprosium (Dy) or Terbium (Tb) through the grain boundaries of sintered magnets. It increases coercivity (Hcj) while minimizing the use of expensive heavy rare earths, optimizing cost and thermal stability.
Environmental Circularity With rising ESG demands, recycling rare earth magnets from wind turbines and EV drivetrains is becoming a key source of secondary raw materials, reducing overall environmental impact.
Smart Automated Inspection Using automated flux measurement devices, laser diffraction size analyzers, and optical sorting machines ensures zero-defect quality control (0 PPM) for automotive and aerospace components.

Localized Applications & Macro Industry Solutions

Bridging physical science and real-world industrial deployments

Electric Vehicles & Automotive EPS

Neodymium magnets are critical components in Electric Power Steering (EPS) systems and EV traction motors. They offer high torque density in a compact size, directly contributing to vehicle range and steering responsiveness.

Consumer Electronics & VCM

Modern voice coil motors (VCM) for smartphone camera autofocus, linear vibration motors, and magnetic phone mounts (Magsafe-compatible) rely on precision-designed ring and disc magnets. These components are engineered for tight spatial tolerances and stable magnetic fields.

Industrial Automation & Heavy Lifting

From high-capacity permanent magnetic lifters rated up to 1000KG to magnetic separation systems and robotic grippers, our NdFeB assemblies provide reliable holding and lifting forces without requiring continuous electrical power.

Global Supply Chain Solutions

To support international manufacturing pipelines, Zhejiang Laysun Magnetics offers tailored logistics and supply chain services. Our headquarters in Hangzhou, China, manages coordinates for global shipping channels, helping clients maintain lean inventory levels while securing their supply of critical rare earth materials.

Our packaging meets strict shipping regulations, including IATA standards for air freight. We use custom steel shielding to contain magnetic fields, preventing interference with aircraft navigation and securing approvals for expedited customs clearance.

Hangzhou Headquarters and Global Logistics Network Map

Quality System, Compliance & Certifications

Stringent production controls meeting the demanding requirements of automotive, aerospace, and heavy industry sectors.

Zhejiang Laysun ISO Certificate
ISO 9001:2015
Zhejiang Laysun CE Certificate
CE Declaration
Zhejiang Laysun ISO 14001 Certificate
ISO 14001

Meeting International Technical Standards

Our quality management system is certified across major industrial frameworks, including API 6D, API 607, CE, ISO9001, ISO14001, ISO18001, and IATF 16949 (TS). These systems ensure consistent quality control, tracking each batch from raw ore to finished product.

We employ modern testing labs equipped with Hysteresisgraphs, ICP-OES (inductively coupled plasma optical emission spectrometers) for chemical composition validation, scanning electron microscopes (SEM) for grain boundary evaluation, and salt spray chambers to test anti-corrosion coatings.

Expert Q&A: Safety, Preservation, and Logistics

Technical guidance on purchasing, transporting, and storing Neodymium Iron Boron magnets.

What are the optimal temperature and environmental parameters for storing NdFeB magnets?
To prevent degradation, sintered Neodymium magnets should be stored in a temperature-controlled environment below 40°C, with relative humidity levels kept below 50%. The storage atmosphere must be free from acidic or corrosive gases, which can degrade the protective nickel, zinc, or epoxy coatings and lead to oxidation of the underlying metal.
How long do Neodymium magnets retain their magnetic field under correct storage conditions?
When stored within their specified thermal and mechanical limits, sintered Neodymium magnets function as permanent magnetic sources. Under these conditions, they experience minimal degradation, losing less than 1% of their magnetic flux density over several decades.
What safety and packaging protocols are required for the air transport of permanent magnets?
International aviation regulations (IATA Packing Instruction 953) require that magnetic shipments must not affect aircraft compasses. For air transit, magnets are packed in shielded containers lined with iron sheeting to contain the magnetic field. The external magnetic field of the packaged shipment must measure less than 0.00525 gauss at a distance of 15 feet.
Which coating is best suited for high-humidity or marine applications?
For high-humidity or marine environments, epoxy coatings, rubber encapsulation, or multi-layer Ni-Cu-Ni (Nickel-Copper-Nickel) electroplating are recommended. For extreme applications, stainless steel or hermetically sealed canister enclosures provide the highest level of protection against corrosive salt spray and humidity.
How does Grain Boundary Diffusion (GBD) improve the performance of motor magnets?
Grain Boundary Diffusion (GBD) allows heavy rare earth elements like Dysprosium (Dy) or Terbium (Tb) to accumulate specifically along the boundaries of the Nd2Fe14B crystal grains. This increases the magnet's intrinsic coercivity (Hcj) and thermal stability, allowing it to operate efficiently at high temperatures while reducing overall material costs.

Specialist Applications & Custom Sized Magnets

High-precision magnet solutions manufactured to custom tolerances for targeted industrial, automotive, and consumer electronics applications.

OEM Neodymium magnets for voice coil motors Factory, Suppliers

OEM Neodymium magnets for voice coil motors Factory, Suppliers

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China High Quality Permanent Cylinder Neodymium Magnet Companies, Exporters

China High Quality Permanent Cylinder Neodymium Magnet Companies, Exporters

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Buy Super Strong Custom Ring Neodymium Magnet Manufacturers, Company

Buy Super Strong Custom Ring Neodymium Magnet Manufacturers, Company

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Wholesale Neodymium magnets for automotive EPS Supplier, Exporters

Wholesale Neodymium magnets for automotive EPS Supplier, Exporters

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China Neodymium Disc Magnets - Permanent Rare Earth Magnets in Disc Shape Manufacturers, Exporter

China Neodymium Disc Magnets - Permanent Rare Earth Magnets in Disc Shape Manufacturers, Exporter

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Buy NdFeB Pot Magnet Style A with nickel coating Company, Suppliers

Buy NdFeB Pot Magnet Style A with nickel coating Company, Suppliers

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Buy Magnet Circle For Magnetic Ring For Phone Manufacturer, Exporter

Buy Magnet Circle For Magnetic Ring For Phone Manufacturer, Exporter

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China Permanent Ring Strong Neodymium Magsafe Magnet Exporters, Quotes

China Permanent Ring Strong Neodymium Magsafe Magnet Exporters, Quotes

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Request Technical Specifications & Pricing

Connect with our engineering support team for assistance with material selection, custom coating designs, or bulk shipping arrangements. Zhejiang Laysun Magnetics provides solutions tailored to the technical requirements of your industrial projects.

Our Service Commitments:

  • Detailed technical responses within 24 business hours.
  • Full material traceability and quality compliance documentation.
  • Custom packaging solutions and logistics coordination for international shipments.

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