Top 10 Samarium Cobalt Magnets Manufacturers in China 2026

When your application demands magnets that perform reliably at extreme temperatures, resist corrosion without surface treatment, and maintain magnetic stability over decades of use, Samarium Cobalt (SmCo) magnets are often the only viable choice. From aerospace actuators and military-grade sensors to high-speed motors and medical devices, SmCo magnets occupy a critical niche that no other permanent magnet material can fully replace. For design engineers, procurement managers, and sourcing professionals looking to secure a dependable supply of high-quality SmCo magnets, China remains the world's most important production hub — home to the richest rare earth reserves, the most mature manufacturing infrastructure, and the deepest pool of specialized magnet expertise on the planet.

But with dozens of Chinese suppliers competing for your business, identifying the right manufacturing partner is easier said than done. Quality standards, production capacity, grade availability, certifications, and application expertise vary enormously from one supplier to the next. That is exactly why we put together this guide. In this article, we profile the Top 10 Samarium Cobalt Magnet Manufacturers in China for 2026 — covering their backgrounds, core strengths, and SmCo product capabilities — so you can make a faster, more confident sourcing decision. Read on to find the right partner for your next project.

List of Top Samarium Cobalt Magnets Manufacturers in China 2026

1. Ningbo Yunsheng Co., Ltd.

Company Profile:

Ningbo Yunsheng Co., Ltd. is a national high-tech enterprise specializing in rare earth permanent magnet materials research, development, manufacturing, and sales since 1995, and is one of the leading manufacturers of rare earth permanent magnet materials in China. Listed on the Shanghai Stock Exchange and employing over 4,000 people across three continents, Yunsheng has grown into an innovative, globally recognized manufacturer of permanent magnets. The company holds ISO and TS certifications and has built long-term strategic partnerships with major international corporations across the automotive, electronics, medical, and clean energy sectors. Notably, Yunsheng is among an elite group of approved patent licensees for NdFeB magnet manufacturing, having renewed its license agreement with Hitachi Special Metals, and also holds the sublicense to sell NdFeB magnets under Magnequench patents.

On the Samarium Cobalt front, Yunsheng is a well-established producer of sintered SmCo permanent magnets, serving applications that demand superior performance under extreme thermal and environmental conditions. In addition to its large-scale NdFeB production, Yunsheng provides SmCo and ferrite magnetic materials and assemblies, with particular strength in machining and tooling for high-grade magnetic assemblies used in linear servo motors, generators, sensors, couplings, acoustic equipment, and automotive components. With production lines spanning billet production, machining, and surface treatment across facilities in Ningbo and Baotou, and an annual production capacity of 21,000 tons, Yunsheng has the scale and vertical integration to deliver consistent SmCo quality for both standard and highly customized industrial requirements.

Establishment: 1995

Headquarters: Ningbo, Zhejiang Province, China

Main Products:

• Samarium Cobalt (SmCo) Permanent Magnets
• Sintered NdFeB Magnets
• Bonded NdFeB Magnets
• Magnetic Assemblies

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2. JL MAG Rare-Earth Co., Ltd.

Company Profile:

JL MAG Rare-Earth Co., Ltd. is a globally recognized high-tech enterprise headquartered in Ganzhou, Jiangxi Province — China's primary production hub for heavy rare earths. Founded in 2008 and dual-listed on both the Shenzhen Stock Exchange (300748.SZ) and the Hong Kong Stock Exchange (06680.HK), JL MAG has established itself as one of the world's leading manufacturers of high-performance rare earth permanent magnets. The company operates an integrated production network spanning Ganzhou, Baotou (Inner Mongolia), and Ningbo, and has secured long-term raw material supply agreements with China Rare Earth Group and China Northern Rare Earth Group — ensuring a stable and strategic supply chain. JL MAG holds ISO 9001:2015, ISO 14001:2015, and IATF 16949:2016 certifications, and its products are widely deployed in new energy vehicles, wind power, industrial servo motors, robotics, rail transit, and consumer electronics by leading companies worldwide.

With an annual production capacity reaching 38,000 tonnes of rare earth permanent magnets as of 2024 — and an expansion plan targeting 60,000 tonnes upon completion of its Green Intelligent Manufacturing Project — JL MAG operates at a scale few competitors can match. The company masters core manufacturing technologies including grain boundary diffusion, which enables the production of high-coercivity, heavy-rare-earth-reduced magnets suited for extreme operating environments. While JL MAG's primary focus is sintered NdFeB, its rare earth permanent magnet portfolio and deep materials expertise extend to Samarium Cobalt (SmCo) magnet solutions for applications demanding exceptional thermal stability, high coercivity, and resistance to demagnetization — making it a credible and capable SmCo supplier for industrial, automotive, and high-tech sector buyers.

Establishment: 2008

Headquarters: Ganzhou, Jiangxi Province, China

Main Products:

• Samarium Cobalt (SmCo) Permanent Magnets
• Sintered NdFeB Permanent Magnets
• Bonded & Injection-Molded Magnets
• Magnetic Components & Motor Rotors
• Rare Earth Recycling & Processing

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3. Zhong Ke San Huan High-Tech Co., Ltd.

Company Profile:

Beijing Zhong Ke San Huan High-Tech Co., Ltd. (中科三环) is one of China's most distinguished rare earth permanent magnet enterprises, with roots tracing back to pioneering research conducted at the Chinese Academy of Sciences (CAS). The company was established on July 23, 1999 by Beijing San Huan Holdings Co., Ltd. of the Chinese Academy of Sciences, and became publicly listed on the Shenzhen Stock Exchange on April 20, 2000 (stock code: 000970). Backed by decades of institutional scientific heritage, Zhong Ke San Huan has grown into a globally recognized manufacturer operating multiple production bases and joint-venture plants across China. The company markets its products worldwide under the trademark SANMAG®, holds a NdFeB magnet patent license from Hitachi Metals, Ltd., and has established joint ventures with world-class partners including Vacuumschmelze GmbH & Co. KG of Germany (SANVAC Beijing) and Seiko-Epson Corporation of Japan. Its products have earned best-supplier recognition from numerous globally renowned companies across automotive, consumer electronics, medical, and industrial sectors.

Within the broader rare earth permanent magnet landscape, Zhong Ke San Huan stands out for its strong institutional R&D foundation and its capacity to serve high-precision, high-reliability applications. The company has close cooperation with many scientific research institutions and is at the forefront of SmCo magnet R&D, constantly exploring new materials and production processes to improve temperature stability and corrosion resistance. Its application-oriented engineering approach means SmCo magnet designs are tailored to the stringent demands of specific industries — including aerospace, where high-strength, lightweight magnet characteristics are critical — and the company maintains a rigorous quality control system throughout the entire production process. For buyers seeking Samarium Cobalt magnets backed by institutional-grade research capability and proven international partnerships, Zhong Ke San Huan represents a highly credible choice.

Establishment: 1999

Headquarters: Beijing, China

Main Products:

• Samarium Cobalt (SmCo) Permanent Magnets
• Sintered NdFeB Magnets
• Bonded NdFeB Magnets
• Soft Ferrite Cores
• Amorphous & Nanocrystalline Soft Magnetic Materials
• Rare Earth Raw Materials

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4. Chengdu Galaxy Magnets Co., Ltd.

Company Profile:

Chengdu Galaxy Magnets Co., Ltd. was established in July 1993 and listed on the Growth Enterprise Market of the Shenzhen Stock Exchange in October 2010. Headquartered in Chengdu, the capital of Sichuan Province, Galaxy Magnets has grown over three decades into one of the most internationally recognized rare earth magnet manufacturers in China. The company claims the position of the world's largest manufacturer of bonded NdFeB magnets, with over 90% of its products sold to developed markets including Japan, Korea, Europe, America, and Taiwan. Its global client base reads like a who's who of consumer electronics and automotive manufacturing, including Nidec, Panasonic, Minebea, SONY, BOSCH, Brose, LG, and Samsung, and the company has been repeatedly recognized as an Excellent Supplier by Nidec, Samsung, LG, and Leili. Galaxy Magnets holds IATF 16949:2016, ISO 9001:2015, and ISO 14001:2015 certifications issued by SGS Switzerland, and has also earned the SONY Green Partner certificate — reflecting its commitment to both quality and environmental responsibility.

Samarium Cobalt magnets are a dedicated and strategically growing product line at Galaxy Magnets. The company established its Sm-Co Magnet Department in 2012 , and has since expanded SmCo production capacity through its wholly-owned subsidiary Chengdu Galaxy Magnetic Material Co., Ltd. Galaxy's samarium cobalt magnets are primarily deployed in military equipment, aerospace, automation control, automotive, and communication industries — sectors that demand the highest levels of thermal stability and resistance to demagnetization. Galaxy's SmCo magnets offer superior magnetic properties including high magnetic energy product, high coercivity, high remanence, a low temperature coefficient as low as −0.030%/°C, and a high working temperature of up to 550°C — enabling reliable long-term operation in harsh environments involving high temperatures, high humidity, strong demagnetizing fields, and even nuclear radiation, without requiring surface treatment. For B2B buyers sourcing SmCo magnets with verifiable supply chain credentials and a proven track record with tier-one global OEMs, Galaxy Magnets is a compelling choice.

Establishment: 1993

Headquarters: Chengdu, Sichuan Province, China

Main Products:

• Samarium Cobalt (SmCo) Magnets
• Bonded NdFeB Magnets
• Hot-Pressed NdFeB Magnets
• Injection-Molded Plastic-Bonded Magnets
• Magnet Assemblies

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5. Ningbo Zhaobao Magnet Co., Ltd.

Company Profile:

Established in 1998 in Ningbo, China, ZHAOBAO MAGNET has grown into a leading magnet manufacturer with three production bases, and has been honored as a National Manufacturing Champion Enterprise by the Ministry of Industry and Information Technology (MIIT). Strategically located in Zhenhai, Ningbo — home to one of the world's largest seaports — the company benefits from exceptional logistics infrastructure that supports fast, reliable delivery to customers worldwide. ZHAOBAO MAGNET operates a complete production chain and a robust quality assurance system, holding certifications including IATF 16949:2016, ISO 14001:2015, OHSAS 18001:2007, and SA 8000:2014. The company's Permanent Magnet Engineering Center, co-established with the Chinese Academy of Sciences, serves as a hub for cutting-edge research , and its innovations currently serve clients across more than 60 countries in industrial automation, automotive, EV powertrains, clean energy, medical devices, robotics, and aerospace.

On the Samarium Cobalt side, ZHAOBAO MAGNET produces NdFeB, SmCo, and AlNiCo magnets and magnetic assemblies, developing magnets with high coercive force, low reversible temperature coefficient, and low weight loss characteristics. The company produces SmCo magnets in both SmCo5 and Sm2Co17 grades across a comprehensive range of shapes — including blocks, rings, cylinders, arcs, discs, and custom special-shaped geometries — making it a highly versatile SmCo supplier for OEM and industrial procurement teams. ZHAOBAO MAGNET positions itself as a strategic partner to rare earth raw material suppliers, ensuring cost control and price stability, and offers production lead times of approximately two to three weeks for mass production and seven days for samples. With over two decades of rare earth magnet expertise and a growing international footprint, Zhaobao is a dependable SmCo source for buyers who prioritize supply chain stability, certifiable quality, and competitive pricing.

Establishment: 1998

Headquarters: Zhenhai, Ningbo, Zhejiang Province, China

Main Products:

• Samarium Cobalt (SmCo) Magnets (SmCo5 & Sm2Co17)
• Sintered NdFeB Magnets
• AlNiCo Magnets
• Magnetic Assemblies

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6. SDM Magnetics Co., Ltd.

Company Profile:

Established in 2004 and located in Hangzhou, Zhejiang Province, SDM Magnetics Co., Ltd. is a leading manufacturer of SmCo magnets in China. Operating from its facility at 108 North Shixin Road, Hangzhou, the company has built a strong international reputation over more than two decades by combining advanced manufacturing technologies with a disciplined quality management approach. SDM Magnetics holds IATF 16949 and ISO 9001 certifications, and its products comply with RoHS, REACH, and SGS standards. A notable hallmark of its quality track record is its automotive supply credentials: since 2010, the company has been supplying magnets to General Motors' OEM network with 0 PPM (zero parts per million defect rate). SDM exports 85% of its products to customers across American, European, Asian, and African markets , serving industries spanning consumer electronics, industrial automation, automotive, green energy, home appliances, medical, aerospace, and telecommunications.

SDM Magnetics stands out in the SmCo space for both its technical depth and raw material security. The company has established a strategic cooperation with Chinalco — China's largest rare earth miner — to ensure a stable and cost-effective supply of rare earth raw materials. Its Samarium Cobalt magnet portfolio covers both SmCo5 and Sm2Co17 series, including specialized low temperature coefficient (LTC) grades that incorporate heavy rare earth elements such as Gadolinium and Erbium to minimize magnetic output variation across a wide temperature range. SDM operates state-of-the-art R&D laboratories and maintains a high level of production automation , enabling consistent output quality across custom shapes and grades. SDM's SmCo magnets are particularly suited to high-speed motors, accelerometers, gyroscopes, medical devices, and travelling wave tubes used in satellite communications and space exploration — applications where thermal stability and long-term reliability are non-negotiable.

Establishment: 2004

Headquarters: Hangzhou, Zhejiang Province, China

Main Products:

• Sintered Samarium Cobalt (SmCo) Magnets (SmCo5 & Sm2Co17, including LTC grades)
• Sintered Neodymium (NdFeB) Magnets
• Bonded Magnets (Compression & Injection Molded)
• AlNiCo Magnets (Cast & Sintered)
• Magnetic Assemblies & Halbach Arrays

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7. XHMAG (Hefei Xinhui Magnet Co., Ltd.)

Company Profile:

Founded in 2011 and headquartered in Hefei, Anhui Province, XHMAG (Hefei Xinhui Magnet Co., Ltd.) is a fast-growing rare earth magnet manufacturer that has established itself as a reliable one-stop supplier of high-performance permanent magnets for global industrial buyers. Located at No. 610 Furong Road, Hefei — a city with strong rare earth processing infrastructure — XHMAG operates modern, ISO 9001 and ISO/TS 16949:2009 certified production facilities equipped with internationally advanced equipment and a comprehensive quality assurance system. With an annual production capacity exceeding 1,000 tons and export sales accounting for approximately 80% of total revenue, the company serves customers in over 30 countries across Europe, North America, South America, and Southeast Asia. Its products are applied in high-end motors, consumer electronics, medical devices, and clean energy — end markets that demand consistent magnetic performance and rigorous quality standards.

XHMAG's Samarium Cobalt magnet offering reflects the company's focus on serving technically demanding applications where NdFeB magnets fall short. The company produces sintered SmCo magnets in both SmCo5 and Sm2Co17 grades, available in a wide range of shapes and sizes — including blocks, rings, discs, cylinders, arcs, and custom geometries — to accommodate diverse customer design requirements. XHMAG's SmCo magnets are valued for their exceptional resistance to demagnetization, high Curie temperature, low temperature coefficient, and inherent corrosion resistance, making them well-suited for high-temperature motors, servo motors, stepper motors, travelling wave tubes, gyroscopes, and precision instrumentation. Backed by in-house quality control, competitive pricing, and a responsive customization capability, XHMAG positions itself as an accessible yet technically capable SmCo supplier for both standard procurement and highly specialized projects.

Establishment: 2011

Headquarters: Hefei, Anhui Province, China

Main Products:

• Samarium Cobalt (SmCo) Magnets (SmCo5 & Sm2Co17)
• Sintered Neodymium (NdFeB) Magnets
• AlNiCo Magnets
• Ferrite Magnets
• Custom Magnetic Assemblies

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8. Ningbo Ketian Magnet Co., Ltd.

Company Profile:

Ningbo Ketian Magnet Co., Ltd. is a Chinese high-tech enterprise founded in 2001, located in Ningbo — a port city with strong geographical advantages for international trade. Ketian is a subsidiary of Ningbo Jintian Copper (Group) Co., Ltd., the largest enterprise specializing in the metallurgy and machining of non-ferrous metals in Zhejiang Province. This group-level backing gives Ketian a distinctive competitive edge: access to deep manufacturing infrastructure, institutional R&D resources, and a global commercial network that spans more than 100 countries. The company has been rated as a provincial innovative pilot enterprise and a patent demonstration enterprise, and has passed ISO 9001, ISO 14001, IATF 16949, and ISO 45001 system certifications. Ketian has also established strategic cooperation with Ningbo Institute of Materials Technology & Engineering of the Chinese Academy of Sciences , and participates in national Torch Program projects for magnet development in wind generators and servo motors — underscoring its standing as a technically driven, innovation-oriented manufacturer.

Ketian is consistently featured in global SmCo market intelligence reports as one of China's key Samarium Cobalt magnet manufacturers. As a trusted SmCo magnet factory, Ketian produces top-tier SmCo magnets offering exceptional high-temperature stability, corrosion resistance, and superior magnetic strength, with custom solutions available in various shapes, sizes, and grades to meet the specific requirements of each application. Its SmCo magnets are engineered to perform reliably in demanding sectors including aerospace, automotive, medical, military electronics, and industrial automation — environments where NdFeB magnets are unsuitable due to thermal constraints. At present, Ketian's products are widely used in new energy vehicles, traditional automobiles, industrial automation, and electroacoustic devices , with customers spanning Europe, North America, and Southeast Asia. For sourcing teams seeking a SmCo supplier with strong group-level backing, proven international credentials, and active R&D investment, Ningbo Ketian represents a well-established and reliable option.

Establishment: 2001

Headquarters: Cicheng Town, Ningbo, Zhejiang Province, China

Main Products:

• Samarium Cobalt (SmCo) Magnets
• Sintered NdFeB Magnets (including N55, 52H, 52SH, 50UH, 45EH, 42AH grades)
• Bonded NdFeB Magnets
• Magnetic Assemblies & Components

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9. Great Magtech (Xiamen) Electric Co., Ltd.

Company Profile:

Great Magtech (Xiamen) Electric Co., Ltd. (GME) is a Xiamen-based permanent magnet manufacturer and magnetic solutions provider with over 15 years of experience in the field, serving a broad range of industries from mining and manufacturing to recycling and precision engineering. Headquartered at Software Park III in the Jimei District of Xiamen, Fujian Province, GME has built a reputation as a versatile and export-oriented magnetic products supplier. The company is certified by TS16949, ISO 9001-2000, CE, RoHS, and SGS , reflecting its commitment to internationally recognized quality and compliance standards. GME serves global markets with a particular focus on North America, South America, and Eastern Europe, and operates with a direct factory supply model that supports OEM and ODM customization across its product range.

Samarium Cobalt magnets form a dedicated part of GME's permanent magnet offering, sitting alongside its broader rare-earth and non-rare-earth product lines. Great Magtech (Xiamen) Electric Co., Ltd. is one of the most experienced samarium cobalt magnet manufacturers and suppliers in China, welcoming wholesale orders of permanent SmCo magnets across standard and custom configurations. GME supplies sintered SmCo magnets in both SmCo5 and Sm2Co17 grades, available in a variety of shapes including discs, rings, blocks, arcs, cylinders, and custom geometries. GME's SmCo magnets are applied in high-temperature motors where temperatures exceed 200°C, high-end electroacoustic devices, aerospace and aviation instrumentation systems, radar and communication equipment including travelling wave tubes and magnetrons, deep-well magnetic feeders, magnetic separators, magnetic bearings, and MRI-related applications. For buyers seeking a versatile, export-experienced Chinese SmCo supplier capable of handling both standard procurement and custom magnetic solution requirements, GME presents a well-rounded and accessible option.

Establishment: c. 2007

Headquarters: Jimei District, Xiamen, Fujian Province, China

Main Products:

• Samarium Cobalt (SmCo) Magnets (SmCo5 & Sm2Co17)
• Neodymium (NdFeB) Magnets
• AlNiCo Magnets
• Flexible & Bonded Magnets
• Magnetic Separators & Assemblies
• Magnetic Chucks & Couplings

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10. HGT Advanced Magnets Co., Ltd.

Company Profile:

HGT Advanced Magnets Co., Ltd. is a competitive China magnet manufacturer and supplier in the global magnet supply chain, specialized in manufacturing and developing rare earth magnets — specifically neodymium iron boron (NdFeB) magnets and samarium cobalt (SmCo) magnets. Headquartered at 146 Hongqi Road, Pidu District, Chengdu, Sichuan Province, HGT operates under its flagship brand ADVANCED MAGNETS™ and markets its products to customers across North America, Europe, East Asia, Southeast Asia, South Asia, the Middle East, Oceania, South America, and Africa. The company combines focused manufacturing expertise with a strong technical content strategy — maintaining dedicated magnetic calculators, application guides, and educational resources on its website — positioning itself as a knowledgeable and transparent partner for engineers and procurement professionals sourcing rare earth magnets globally.

Sintered SmCo magnets are a core product line at HGT, backed by clearly defined production capacity and in-house quality assurance. HGT has an annual production capacity of 100 tons of sintered SmCo magnets, and is capable of batch production of high-performance SmCo grades including XGS32H, XGS28H, and XGS30H. HGT's sintered SmCo magnets feature low temperature coefficients and a high Curie temperature, extending the maximum working temperature of applications to 350°C (662°F) — making them well suited for aerospace instrumentation, automotive sensors, high-temperature motors, traveling wave tubes, and precision devices where NdFeB magnets cannot reliably operate. Following principles of early supplier involvement (ESI) and continuous improvement (Kaizen), HGT efficiently and continuously supplies customers with sustained value-added products and solutions throughout the processes of product customization and application. For buyers who value technical transparency, responsive customization, and a specialist rare earth magnet focus, HGT Advanced Magnets is a reliable and well-documented option.

Establishment: c. 2010

Headquarters: Pidu District, Chengdu, Sichuan Province, China

Main Products:

• Sintered Samarium Cobalt (SmCo) Magnets (SmCo5 & Sm2Co17)
• Sintered Neodymium (NdFeB) Magnets
• Bonded NdFeB Magnets & Magnetic Assemblies
• Radially Oriented NdFeB Ring Magnets
• Magnetic Bars & Filters

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Conclusion

The 10 manufacturers profiled in this article represent the best of what China's Samarium Cobalt magnet industry has to offer in 2026 — spanning publicly listed enterprises with large-scale production capacity, institutions with deep rare earth R&D heritage, and agile specialists built for customization and global export. Whether your priority is high-volume supply, stringent automotive-grade certification, or application-specific engineering support, there is a capable Chinese SmCo manufacturer on this list to meet your needs.

Among them, XHMAG (Hefei Xinhui Magnet Co., Ltd.) stands out as a particularly well-rounded choice for international buyers. With ISO 9001 and ISO/TS 16949:2009 certifications, an annual production capacity exceeding 1,000 tons, and a proven export track record spanning over 30 countries, XHMAG delivers reliable SmCo magnet solutions — in both SmCo5 and Sm2Co17 grades — at competitive prices with responsive customer support. To request a custom quote or learn more, visit www.xinhuimagnet.com.

FAQs: Samarium Cobalt Magnet Manufacturers in China

1. What is the difference between SmCo5 and Sm2Co17?

SmCo5 (1:5 series) contains one samarium atom for every five cobalt atoms, offering a maximum energy product of 15–25 MGOe and a maximum working temperature of around 250°C. Sm2Co17 (2:17 series) delivers a higher energy product of 24–32 MGOe and can withstand working temperatures up to 350°C, making it the preferred choice for the most demanding high-temperature applications.

2. How do Samarium Cobalt magnets compare to Neodymium (NdFeB) magnets?

NdFeB magnets generally offer higher magnetic strength at room temperature and lower cost, making them the dominant choice for most commercial applications. SmCo magnets, however, outperform NdFeB in high-temperature environments, offer superior corrosion resistance (often requiring no coating), and provide greater long-term magnetic stability. SmCo is the preferred choice when operating temperatures exceed 150°C or when the application environment is corrosive or chemically aggressive.

3. What industries use Samarium Cobalt magnets most frequently?

SmCo magnets are widely used in aerospace and defense (actuators, gyroscopes, traveling wave tubes), automotive (sensors, ABS systems, high-temperature motors), medical devices (MRI components, surgical instruments), industrial automation (servo motors, encoders), communications (radar systems, microwave devices), and clean energy (high-speed generators). Any application requiring reliable magnetic performance above 150°C is a strong candidate for SmCo.

4. What is the typical lead time for SmCo magnet orders from China?

Lead times vary depending on order complexity and volume. Samples and prototype quantities typically take 7–15 days. Standard mass production orders generally require 2–4 weeks. For highly customized grades or large-volume orders, lead times of 4–6 weeks are common. Suppliers located in Ningbo benefit from proximity to one of the world's largest seaports, which can shorten overall delivery timelines for international buyers