Engineered for high load capacities, automotive EPS modules, and industrial automation equipment in Bac Ninh, Binh Duong, and Hai Phong industrial zones.
As Vietnam positions itself as the primary high-tech electronic manufacturing hub of Southeast Asia, industrial centers from Binh Duong, Dong Nai, to Bac Ninh are witnessing a staggering increase in need for high-precision components. Magnet assemblies—critical subsystems in Voice Coil Motors (VCM), automotive EPS (Electric Power Steering) modules, smartphone acoustic arrays, and smart factory robotic grippers—have become central to maintaining manufacturing output.
Global multi-nationals and Tier-1 EMS suppliers in Vietnam demand more than just raw Neodymium blocks; they require integrated sub-assemblies (magnetic circuits coupled with metal, plastic, or rubber brackets) optimized for immediate implementation on their assembly lines. At Zhejiang Laysun Magnetics Ltd., we serve as the vital bridge, delivering robust manufacturing capabilities direct to Vietnam's expanding industrial nodes.
A trusted National High-Tech enterprise manufacturing advanced rare earth magnets since 1999.
Founded at the turn of the millennium, Zhejiang Laysun Magnetics Ltd. has evolved into an international pacesetter. Our state-of-the-art production complex, spanning across 100,000 square meters in Suining, Sichuan, provides direct access to prime rare earth extraction and oxide refining channels. This strategic geolocation ensures stability of cost and consistency of material properties, shielding our clients in Vietnam and worldwide from volatile market swings.
We specialized in the research, development, assembly, and magnetization of sintered NdFeB magnets. By deploying advanced production techniques like helium-jet milling, strip casting, and grain boundary diffusion (GBD), we manufacture magnet systems with high coercivity (Hcj) and thermal stability up to 230°C—essential for automotive electric drivetrains operating in tropical Southeast Asian climates.
How our advanced production lines and geographic logistics benefits Vietnam's manufacturing hubs.
We leverage Finite Element Analysis (FEA) to simulate magnetic flux paths. This guarantees our metal-to-magnet and plastic-to-magnet assemblies achieve maximum holding force while optimizing rare earth volumes.
Our cleanrooms run smart pick-and-place lines, dispensing epoxy adhesives, positioning micro-magnets, and performing multi-axis magnetic field mapping to eliminate physical defects.
Located on China's prime trade belts, we orchestrate express sea and land-freight lanes directly to Lang Son, Hai Phong, and Ho Chi Minh City ports. Lead times from order to warehouse dock are halved under ACFTA.
Aligning advanced rare earth magnetic technology with the real-world manufacturing environments of local factories.
Engineered to withstand rigorous operational requirements in modern manufacturing and assembly fields.
| Magnet Grade Class | Remanence (Br) | Coercivity (Hcb) | Intrinsic Coercivity (Hcj) | Max Operating Temp | Recommended Applications in Vietnam Industry |
|---|---|---|---|---|---|
| N35 - N52 | 1.17 - 1.48 T | ≥ 868 kA/m | ≥ 955 kA/m | 80 °C | Consumer Electronics, Packaging, Magnetic Pins, Badges in Bac Giang |
| N35M - N50M | 1.17 - 1.45 T | ≥ 876 kA/m | ≥ 1114 kA/m | 100 °C | Magnetic Lifters, Acoustic Devices, VCM Assemblies in Bac Ninh |
| N30H - N48H | 1.08 - 1.43 T | ≥ 828 kA/m | ≥ 1353 kA/m | 120 °C | Precision Sensors, Automation Servo Motors in Dong Nai |
| N30SH - N45SH | 1.08 - 1.39 T | ≥ 828 kA/m | ≥ 1592 kA/m | 150 °C | EPS Systems, High-RPM Motors, Heavy Equipment in Binh Duong |
| N28UH - N40UH | 1.04 - 1.30 T | ≥ 796 kA/m | ≥ 1989 kA/m | 180 °C | Electric Vehicle (EV) Traction Motors, Hybrid Engines (VinFast Tier 1) |
| N28EH - N38EH | 1.04 - 1.25 T | ≥ 796 kA/m | ≥ 2387 kA/m | 200 °C | Aerospace, Industrial Generators, High-temperature Wind Turbines |
Explore our foundational range of NdFeB magnets, engineered hooks, and high-coercivity assemblies configured for global logistics.
Headquartered in China, we are building global subsidiaries and logistics channels to serve modern manufacturing. We supply to factories throughout Ho Chi Minh City, Haiphong, Bac Ninh, Da Nang, and Binh Duong.
Our quality management is certified to international standards: API 6D, API 607, CE, ISO9001, ISO14001, ISO18001, TS (TS16949 for automotive component compliance). If you require copies of our testing reports, salt-spray certifications, or SGS raw material declarations, please connect with our service desk.
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Essential engineering and logistical guidance for procurement directors, assembly plant engineers, and hardware designers.
A: Sintered NdFeB is highly susceptible to humidity. To address Vietnam's tropical environment, we offer multi-stage plating configurations, including electroplated Nickel-Copper-Nickel (NiCuNi), Zinc (Zn), black or grey Epoxy, and Teflon. For marine or harsh outdoor automation setups, we produce fully hermetic Rubber-Coated or Stainless Steel encased assemblies that prevent oxygen and moisture from contacting the magnet core.
A: Yes, we utilize Finite Element Method (FEM/FEA) software to model magnetic flux distributions, load forces, and air gap performance. This allows us to optimize the magnetic circuit layout (such as Halbach arrays or pot magnet assemblies) and minimize rare earth mass to save unit costs for our partners.
A: Under the ASEAN-China Free Trade Agreement (ACFTA), most permanent magnets and magnetic assemblies qualify for preferential duty rates with a Certificate of Origin (Form E). Geographically, shipments from our factory hub to northern industrial zones like Bac Ninh or Hai Phong take 3 to 5 days by land route, and roughly 7 to 10 days by sea route to Ho Chi Minh City / Binh Duong.
A: We use high-coercivity grades (SH, UH, EH, AH series) that include heavy rare earth elements (Dy, Tb) via grain boundary diffusion (GBD). This optimizes the magnet to withstand operating demagnetization fields at high working temperatures of up to 220°C, ensuring durability in continuous duty industrial motors.
A: Yes. We can design and produce custom magnetization fixtures to enable axial, radial, multi-pole (e.g. 4-pole, 8-pole on ring magnets), and skew magnetization patterns. This is ideal for precision encoders and brushless motor rotors used in automation lines.
Laysun Magnetics
