Engineered to deliver exceptional coercivity, stability, and maximum energy density for high-performance applications.
Founded at the turn of the millennium in 1999, Zhejiang Laysun Magnetics Ltd. has evolved from a pioneering startup into a nationally recognized high-tech leader in the rare earth permanent magnet sector. Our state-of-the-art production complex in Suining, Sichuan, is equipped with state-of-the-art automated manufacturing lines to deliver optimal value and high-performance solutions globally.
We focus exclusively on the research, development, and high-volume manufacture of top-tier sintered Neodymium-Iron-Boron (NdFeB) magnet configurations. From rectangular block profiles to custom-designed radial structures, our materials serve as the critical functional core for modern automotive drivetrains, servo drives, precision sensors, consumer electronics, and sustainable green energies.
Our core values are built on four pillars: Quality, Credibility, Technology, and Innovation. By utilizing advanced metallurgy processes and precise post-processing, we ensure our global partners receive dependable magnetics designed to meet or exceed rigorous international standards.
Rectangular Neodymium (NdFeB) magnets represent the pinnacle of modern magnet engineering. Offering the highest maximum energy product (BH)max of all commercially available permanent magnets, these sintered materials provide exceptional magnetic flux densities within minimal envelope spaces. In high-performance settings, these components deliver the power density and structural efficiency required to operate modern electric motors, linear actuators, and high-frequency transducers.
The manufacturing landscape for sintered NdFeB blocks is undergoing rapid transition. Driven by the global push for carbon neutrality, modern applications demand magnets that maintain high remanence (Br) while operating in extreme thermal environments. Innovations in Grain Boundary Diffusion (GBD) technology allow manufacturers to strategically concentrate heavy rare earth elements like Dysprosium (Dy) or Terbium (Tb) along the magnet's crystal junctions rather than distributing them throughout the entire alloy. This targeted approach significantly increases intrinsic coercivity (Hcj) while minimizing the consumption of critical raw materials, reducing price volatility for commercial procurements.
Furthermore, automated high-precision slicing, wire electrical discharge machining (EDM), and visual automatic optical inspection (AOI) systems have raised manufacturing tolerances to the micron level. These advancements prevent mechanical failures in high-speed rotors and precision linear guides, ensuring long-term reliability in industrial environments.
B2B procurement teams face a complex challenge: balancing unit costs with long-term performance reliability. The term "cheap" must be understood through the lens of Total Cost of Ownership (TCO). Substandard NdFeB magnets that suffer from premature thermal demagnetization, poor chemical resistance, or mechanical flaking can lead to costly product recalls and system downtimes.
To mitigate these risks, strategic global procurement teams prioritize suppliers with integrated manufacturing chains. Our supply chain structure, from raw oxide processing through melting, pulverization, pressing, sintering, machining, and final surface treatment, guarantees batch-to-batch consistency. Furthermore, long-term procurement agreements protect against fluctuations in rare earth pricing, ensuring stable commercial operations.
Our 100,000 m² Sichuan production facility demonstrates the advantages of China's Factory 4.0 initiative. By utilizing smart logistics, automated material transport, and integrated digital twin monitoring, we maintain strict control over every stage of NdFeB production. Sintering vacuum levels, cooling rates, and precise gas atomization are continuously recorded to generate detailed quality reports for every batch.
With an annual output exceeding 5,000 tons, our operations benefit from significant economies of scale. We utilize advanced multi-station continuous pressing systems that produce thousands of rectangular blanks daily, reducing waste and raw material costs. This allows us to supply high-grade magnets at competitive price points while adhering to strict environmental, safety, and quality standards.
Modern supply chain resilience relies on raw material security and efficient logistics. Sichuan's close proximity to major rare earth mining and refining hubs ensures a reliable, continuous flow of high-quality inputs, protecting our production lines from raw material shortages. In addition, our logistics partnerships in Hangzhou and major regional transit centers enable streamlined customs clearances and fast sea, air, and rail freight routing to all major global destinations.
Selecting the correct sintered NdFeB rectangular magnet requires a thorough understanding of magnetic grades and application temperatures:
Unprotected NdFeB is susceptible to atmospheric corrosion and oxidation. Therefore, selecting the correct protective surface treatment is crucial for long-term stability in demanding operating environments:
We deliver exceptional reliability and performance through advanced manufacturing and strict quality assurance.
Equipped with state-of-the-art vacuum sintering ovens, automated orientation presses, and high-efficiency slicing machinery, we produce complex rectangular geometries with high dimensional accuracy.
Our production lines adhere to IATF 16949, ISO 9001, ISO 14001, and ISO 18001 standards. Each batch undergoes thorough magnetic properties analysis and dimensional verification.
With direct logistics lines and strategic warehouse partnerships, we ensure fast, reliable delivery of high-volume NdFeB solutions to key manufacturing regions worldwide.
Explore our diverse portfolio of high-grade permanent magnets engineered for various applications.
Our high-performance magnets are deployed in critical applications across diverse industries worldwide.
Certified compliance to support critical aerospace, automotive, and industrial manufacturing requirements.
Technical and procurement questions answered by our engineering and application specialists.
When considering the Total Cost of Ownership (TCO), NdFeB blocks offer the highest magnetic force per unit volume. This high power density allows engineers to design smaller, lighter motors and systems. By minimizing assembly sizes and housing materials, the overall system manufacturing cost is reduced compared to using lower-energy materials like Ferrite or AlNiCo.
If a magnet is exposed to temperatures exceeding its designated threshold (e.g., 80°C for N-grade, 120°C for H-grade), it can experience thermal demagnetization. To prevent this, our engineering team helps you select the correct coercivity rating (M, H, SH, UH, EH, or AH) and optimizes the length-to-thickness ratio (permeance coefficient) to match your operating environment.
For harsh environments, we recommend double-layer organic Epoxy coatings or specialized rubber coating. These options seal the magnet surface against moisture, acid, and alkaline chemicals. For standard industrial use, multi-layer Ni-Cu-Ni plating provides reliable mechanical protection and durability.
We maintain complete process control across our 100,000 m² factory. We monitor magnetic particle sizes during pulverization, manage vacuum levels during sintering, and use automated testing systems (hysteresisgraphs) to verify the magnetic properties of every batch before shipping.
Standard custom samples are typically completed within 7 to 10 days of drawing approval. For complex geometries, multi-pole magnetic orientation patterns, or specialized coatings, production may require 15 to 20 days. High-volume production orders are scheduled based on raw material availability and manufacturing capacity.
Additional high-grade magnetic solutions and configurations for diverse commercial applications.
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Laysun Magnetics