Since our inception in 1999, Zhejiang Laysun Magnetics Ltd. has grown to become a national high-tech leader in manufacturing rare earth magnets. Our commitment to excellence, deep material science knowledge, and continuous innovation enables us to serve high-end global markets with top-tier NdFeB solutions.
Specializing in the development, research, production, and sales of high-performance rare earth NdFeB magnets, we cater to a diverse range of applications. Our magnets are integral to various sectors, including electric vehicles, industrial motors, computers, and consumer electronics, enhancing the efficiency and performance of these modern technologies.
Our engineering and manufacturing ecosystem is optimized to provide maximum value, technical compliance, and rapid scaling for global supply chains.
Founded at the turn of the millennium in 1999, we have spent 25 years accumulating critical process methodologies, material grade insights, and deep domain expertise in rare earth sintered magnets.
Leveraging national-level research capabilities, we design custom NdFeB geometries—ranging from micro-thin discs and blocks to multi-pole arc segments with tolerances up to ±0.01mm.
With our 100,000 m² state-of-the-art manufacturing plant, we can supply massive production cycles, delivering up to 5,000 tons of high-performance permanent magnets per year with zero supply chain interruption.
We enforce strict IATF 16949, ISO9001, and CE standards. Our magnets are tested for magnetic domain consistency, thermal demagnetization, and corrosion resistance to meet international standards.
From standard Nickel-Copper-Nickel (Ni-Cu-Ni) and eco-friendly Zinc (Zn) to protective Epoxy, Polyurethane, and Rubber coatings, our surface treatments guard against oxidation in harsh environments.
Our engineering team works closely with your R&D department from concept to mass production, providing professional simulation data, material testing, and customized solutions.
Neodymium Iron Boron (NdFeB) magnets, particularly when sliced into extremely thin dimensions (under 1.0mm down to 0.15mm), present challenging physical properties. Sintered NdFeB is naturally brittle and sensitive to thermal stress, which introduces cracking risks during precision slicing.
Material Microstructure Optimization: By optimizing the grain boundary structure and utilizing grain boundary diffusion (GBD) technology, we reduce heavy rare earth (Dysprosium, Terbium) consumption while maintaining high coercivity (Hcj). This enables the production of thin magnets with high energy density (up to N55 or 52SH) that operate safely at temperatures up to 200°C without permanent demagnetization.
Standard cutting methods can damage the magnetic properties of thin slices. Zhejiang Laysun Magnetics utilizes multi-wire saw slicing and high-speed diamond slicing machines to achieve stable tolerances (±0.02mm) and reduce edge chipping.
Because ultra-thin NdFeB has a high surface-area-to-volume ratio, it is more vulnerable to corrosion. We implement strict electrochemical controls for our Ni-Cu-Ni, Epoxy, and chemical vapor deposited (CVD) Parylene coatings, ensuring long-term stability even under high humidity conditions.
Our factory, spanning 100,000 square meters in Sichuan, leverages direct access to primary rare earth mining and smelting hubs. This proximity stabilizes our raw material pricing (Neodymium, Praseodymium, Dysprosium, Terbium) and guarantees a reliable supply.
Our headquarters in Hangzhou, China, places us within one of the world's most advanced high-tech logistics and manufacturing hubs. This allows us to offer:
This supply chain integration enables us to provide cost-effective NdFeB magnet quotes while keeping lead times short for our international clients.
Our high-performance rare earth NdFeB magnets are key components across critical tech sectors, driving efficiency and system miniaturization.
High-torque joint actuators, compact frameless motors, and micro-precision components for industrial robots and cobots.
Ultra-light brushless outrunner motors that maximize lift-to-weight ratios and improve flight times.
High-temperature NdFeB magnets for traction motors, aux pumps, and advanced Electric Power Steering (EPS) units.
Compact brushless motors that deliver high power density, reliability, and long battery life in cordless tools.
Compact acoustic components, linear vibration motors, camera focus systems, and wireless charger alignments.
Efficient inverter compressor motors for modern air conditioning systems, washing machines, and refrigerators.
We enforce strict testing procedures throughout the manufacturing process, conforming to global industrial and automotive standards.
Quality Management Systems
Automotive Quality Systems Standards
Environmental Compliance & European Standards
Our certifications include API 6D, API 607, CE, ISO9001, ISO14001, ISO18001, and IATF 16949 (TS). If you require copies of our certificates, please contact our support team.
Expert technical insights on thin neodymium permanent magnets, coatings, performance limits, and logistics.
For sintered NdFeB magnets, we can achieve a minimum thickness of 0.15mm to 0.3mm depending on the overall dimensions (length and width). However, as thickness decreases, the material's structural fragility increases. We use high-precision multi-wire saws and specialized machining setups to control tolerances within ±0.01mm to ±0.02mm, ensuring stable magnetic properties.
Since neodymium is prone to oxidation, thin magnets require high-quality surface treatments due to their high surface-to-volume ratio. We offer multi-layer Nickel-Copper-Nickel (Ni-Cu-Ni), Epoxy coatings (both black and grey), Parylene, Zinc, and Gold plating. For harsh operating environments, we also provide custom rubber coatings to prevent moisture ingress.
The maximum operating temperature is determined by the magnet's composition. Standard N-grade magnets operate up to 80°C. For higher temperature requirements, we offer specialty grades such as M (up to 100°C), H (up to 120°C), SH (up to 150°C), UH (up to 180°C), and EH (up to 200°C). We utilize grain boundary diffusion (GBD) technology to improve high-temperature performance while maintaining optimal magnetic flux density.
We conduct strict quality checks at every step of production. This includes magnetic hysteresisgraph testing to verify demagnetization curves, fluxmeter checks for magnetic flux stability, Salt Spray Testing (SST) for coating corrosion resistance, and Highly Accelerated Stress Testing (HAST) to confirm performance under high temperature and humidity.
Standard prototype runs typically take 10 to 15 days, depending on tooling requirements and finishing/plating specifications. Mass production orders are generally fulfilled within 25 to 30 days. We maintain safety stock of raw alloys to expedite manufacturing for critical schedules.
Submit your dimensional drawings, required magnetic grades, and coating specifications. Our technical engineering sales team will respond with a quote within 24 hours.
Laysun Magnetics