High-performance permanent magnet systems designed to integrate seamlessly into complex Japanese industrial applications.
Years of Engineering Excellence
sqm Factory Footprint
Tons Annual Output
Expert Technicians
The Tokyo metropolitan industrial corridor—ranging from Ota City's ultra-precise micro-machining workshops to global robotics and automotive giants headquartered across Kanagawa and Saitama—runs on micro-tolerances and high-stability components. In these demanding landscapes, raw magnetic materials are rarely sufficient on their own. Engineers require highly sophisticated magnet assemblies that combine permanent magnets (NdFeB, SmCo, Ferrite) with structural steel, non-magnetic sleeves, and specialized coatings to yield optimized magnetic circuits.
As the primary engine driving Tokyo's advanced industrial applications, magnet assemblies must deliver maximum flux density, exceptional thermal stability up to 220°C, and robust mechanical housing to prevent physical degradation. Whether utilized in voice coil motors (VCM) for optical actuators, electronic power steering (EPS) sensors, or robotic arm joints, these assemblies must adhere strictly to Japanese structural standards.
At Zhejiang Laysun Magnetics Ltd., we understand that supplying to the Tokyo market requires more than manufacturing capability. It demands strict material traceability, high-fidelity finite element analysis (FEA) simulation data, and a robust supply chain capable of delivering reliable components with micron-level tolerances.
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Pushing the physical boundaries of rare earth magnetic assemblies to support high-performance industrial paradigms.
By diffusing Dysprosium (Dy) or Terbium (Tb) selectively into the grain boundaries of Neodymium magnets, we boost high-temperature coercivity while keeping heavy rare earth usage—and material cost—to an absolute minimum.
Using electromagnetic 3D simulation tools, we optimize flux paths before steel metal components are bonded. Our automated robotic lines align, press, and glue components with micron-level geometric accuracy.
Our solutions feature multi-layered coatings, including Chemically Vapor Deposited (CVD) Parylene, automated Spray Epoxies, and Electrophoretic coatings, ensuring survival in harsh industrial fluid environments.
Modern Tokyo-based automation enterprises operate at high speeds, exposing motor and actuator components to excessive mechanical and thermal stress. Conventional NdFeB magnets suffer irreversible demagnetization if thermal thresholds are crossed. Our advanced engineering focuses on manufacturing grade N52H, N48SH, N42UH, and N38EH sintered neodymium materials, designed to sustain operations up to 200°C without losing more than a negligible percentage of magnetic flux.
Furthermore, magnetic force must be directed precisely. Through custom pot designs, back iron structures, and magnetic yoke integration, we manufacture assemblies that concentrate the magnetic field exactly where required, reducing stray field interference—a critical factor in high-density sensor grids and micro-robotics.
Founded at the turn of the millennium in 1999, Zhejiang Laysun Magnetics Ltd. has evolved from a specialized regional manufacturer into a globally recognized leader in rare earth permanent magnets and custom magnetic assemblies. Our state-of-the-art manufacturing hub spans over 100,000 square meters in Suining, Sichuan, where a dedicated team of over 300 engineering and production professionals utilizes cutting-edge metallurgy technology.
With an annual production capacity exceeding 5,000 tons of sintered NdFeB magnets, we run vertical manufacturing operations. From raw material melt-spinning to alignment pressing, sintering, precision wire-cutting, high-speed grinding, automated plating, and complex mechanical assembly, we control the entire lifecycle. This vertical integration allows us to offer unmatched supply chain predictability, consistent chemical composition, and strict batch-to-batch consistency for all global partners, including leading distributors and Tier 1 suppliers in Tokyo.
Leveraging automated manufacturing clusters and direct logistical pathways to serve the Tokyo industrial corridor.
By integrating automation across our production floors in China, we minimize manual errors and dramatically scale our manufacturing output. Automated slicing machines, robotic flux measurements, and CNC-guided machining centers ensure that every single magnet assembly matches the exact CAD blueprint specified by Japanese clients. This high level of automation reduces labor overheads, allowing us to pass significant cost savings to our clients without compromising on quality.
China is home to the world's most robust rare earth supply chain. Our strategic relationships with upstream mining and refining hubs in Sichuan and Inner Mongolia guarantee uninterrupted access to critical heavy rare earth metals, stabilizing prices even during market fluctuations. This means Tokyo buyers can secure multi-year supply contracts with minimal pricing volatility.
Headquartered with easy access to major shipping hubs, we coordinate express maritime and air routes to Tokyo. Whether shipping bulk FCL/LCL to the Port of Tokyo or routing urgent prototypes through Narita or Haneda Airport, our logistics department manages customs clearance, duty paperwork, and localized inland trucking for a seamless, hassle-free delivery experience.
Engineered magnetic circuits designed for automotive, robotics, aerospace, and consumer electronics applications.
High-coercivity segmented arc NdFeB magnets built with low eddy-current losses. Ideal for robotic arm joints, high-precision AGV drive wheels, and factory automation servo systems.
IATF 16949 certified magnetic assemblies engineered for Electric Power Steering (EPS), dynamic drive motor yokes, and electric vehicle sensor assemblies.
Micro-sized neodymium ring assemblies and MagSafe-compatible magnets featuring ultra-thin nickel or gold coatings for smartphones, wearables, and audio drivers.
Headquartered in Hangzhou, China, Eneroc (a strategic partner network) is building our worldwide subsidiaries and offices to serve our customers globally. For the Tokyo market, we provide direct engineering support and dedicated account managers who understand the nuances of Japanese corporate communications and technical documentation. Our partner network simplifies international shipping and customs clearance, allowing Japanese engineering teams to source from us as easily as buying from a domestic vendor.
Our quality policies align with the most rigorous Japanese industrial standards. Every shipment is backed by statistical process control (SPC) data, including demagnetization curves, surface finish measurements, and salt spray test reports. We realize that an assembly failure in a high-speed production line or an automotive steering column can be catastrophic. Therefore, we subject 100% of our products to visual and dimensional inspections before they leave our warehouse.
Furthermore, our materials comply fully with the RoHS directive and REACH regulations, ensuring safety and compliance for integration into consumer goods exported to the European Union and North America. Whether your design requires compliance with API 6D, API 607, CE, ISO9001, ISO14001, ISO18001, or TS standards, we have the certified processes to back it up.
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Select from our standard configurations or request custom dimensions, grades, and coatings designed specifically for your projects.
Get authoritative answers to common engineering questions regarding the selection, application, and importing of magnetic systems.
A raw magnet is a sintered block or disc of magnetic material. A magnet assembly combines the magnet with non-magnetic materials (such as carbon steel yokes, stainless steel sleeves, brass rings, or plastic casings). This design routes the magnetic flux lines to double or triple the pull force on a specific working face while shielding other areas from magnetic interference.
We source premium dysprosium and terbium rare earth metals and apply Grain Boundary Diffusion (GBD) technology. This raises the intrinsic coercivity (Hcj) of our magnets, enabling high-performance grades (such as N42SH or N38EH) to withstand continuous operating temperatures of 150°C to 200°C without losing magnetic flux.
For standard indoor environments, multi-layer Electroplated Nickel-Copper-Nickel (Ni-Cu-Ni) offers excellent cost-effective protection. For harsh chemical environments, marine salvage, or high-humidity automotive applications, we offer Epoxy coatings, Rubber encapsulation, and chemically vapor deposited (CVD) Parylene coatings.
Yes. Our in-house research and development team uses Finite Element Analysis (FEA) software to model and simulate magnetic fields, holding forces, and potential saturation points. We collaborate directly with Japanese design engineers, accepting detailed CAD drafts and translating them into production-ready assemblies.
Prototype samples are usually completed and shipped via air express (FedEx/DHL/EMS) within 10 to 15 days. Mass production runs take approximately 25 to 30 days. We offer sea freight options directly to the Port of Tokyo and air freight to Haneda/Narita, including support for all import declarations and customs clearance.
Absolutely. All raw materials and coatings are thoroughly tested and compliant with RoHS Directive 2011/65/EU and REACH (EC 1907/2006). Our quality labs also run regular checks to ensure compliance with JIS guidelines and various corporate environmental guidelines.
Laysun Magnetics