Sourcing neodymium (NdFeB) magnets in volume means, in practice, sourcing from China, it makes the large majority of the world's supply. The useful question is not whether to source from China but how to pick and vet a supplier. This guide lists the major Chinese producers for context, then gives the practical checklist that actually protects a buyer: manufacturer versus trading company, certifications to verify, export-licence reliability under the 2025 rules, and quality due diligence.
01 · What to look for
What buyers actually need from an NdFeB supplier
For a procurement engineer, the hard part isn't finding a company that will sell you magnets. It's finding one you can actually qualify: one that holds spec at temperature, ships certified to your industry, prices honestly, and keeps shipping when tariffs and export rules move. A supplier worth shortlisting covers:
Manufacturer vs. trading company. Identify the contracting supplier, manufacturing site and exporter of record. Agree access to production and inspection records, design confidentiality and responsibility for defects. A supplier label or factory tour alone does not establish those controls.
Export licence (MOFCOM). Classify the actual material, finished item, destination and end use under the rules in force. A grade suffix or supplier statement does not establish clearance. Where licensing is required, confirm the exporter of record, licence scope and schedule before shipment.
Certifications, verify, don't just collect. Confirm the quality-system and submission requirements specified by your customer. Verify the current certificate, covered activities and named production plant with the issuer. The contracting supplier and certified production entity can differ; document their responsibilities and the production route.
Quality verification. Request the measured B-H demagnetization curve, Br / Hcj / (BH)max, coating type and salt-spray hours, and dimensional tolerances, and validate first-article parts against them, ideally with a third-party pre-shipment inspection.
IP protection. Agree confidentiality, permitted design use and disclosure to production partners before sharing proprietary files. Have the agreement and its enforcement provisions reviewed for the parties and jurisdictions involved.
Cost and GBD. Grain boundary diffusion is evaluated against the required coercivity, material composition and magnet geometry. In a reported N45H specimen comparison, Hcj changed from 17.67 to 26.55 kOe and Br from 13.62 to 13.61 kGs. A new programme needs its own material validation and cost comparison; this specimen result does not establish a saving for another part.
The best magnet supplier isn't the one with the longest grade list. It's the one that can prove the grade holds at your operating temperature, certify it to your industry, and keep the line fed when the supply chain moves.
02 · The List
China Magnet Manufacturers & Suppliers
Mainrich International
Est. 1994 · China-based, factory-direct supplier serving Western buyers
Custom sintered NdFeB magnets and magnetic assemblies, reviewed against the drawing. Mainrich range N30 to N56, no AH grades; material, geometry and operating conditions confirmed together.
Best for: Accessible factory-direct partner for mid-size Western buyers; vetting, export licensing, and assemblies handled
Certifications: Current production-plant certificate and order scope confirmed during qualification.
2.JL MAG Rare-Earth
Est. 2008 · Ganzhou, Jiangxi
One of China's largest high-performance sintered-NdFeB producers (~20,000+ t/yr finished magnets); publicly listed in Shenzhen and Hong Kong. Reported EV and clean-energy supply.
3.Zhongke Sanhuan
Est. 1999 · Beijing
Major high-performance sintered-NdFeB producer (publicly listed); roots in the Chinese Academy of Sciences. Electronics, automotive, wind, medical.
4.Ningbo Yunsheng
Est. 1995 · Ningbo, Zhejiang
Large rare-earth permanent-magnet producer (~21,000 t/yr stated capacity), publicly listed; billet, machining, and surface treatment.
Shortlisting suppliers for a China program?
Send a drawing or a target spec and we'll quote the right grade or assembly, flagging any end-use restriction up front.
5.Yantai Zhenghai Magnetic
Est. 2000 · Yantai, Shandong
High-performance sintered NdFeB (publicly listed); also makes NEV drive motors and controls.
6.Earth-Panda Advanced Magnetic Material
Est. 2003 · Hefei, Anhui
Sintered and bonded NdFeB (also SmCo), publicly listed; serves automotive, wind, motors, instruments, and medical, and exports broadly.
7.Advanced Technology & Materials (AT&M)
Est. 1998 · Beijing
Among China's earliest sintered-NdFeB suppliers (publicly listed; CISRI lineage); a diversified advanced-materials group.
8.Baotou Tianhe Magnetics
Est. 2008 · Baotou, Inner Mongolia
Vertically integrated raw-material-to-magnet producer (reported >10,000 t/yr); NEV, wind, robotics, aerospace, electronics, appliances.
Reviewing a second source?
Mainrich reviews the drawing, production route and shipment documentation for the proposed order. Qualification and delivery timing are agreed with your team.
9.Zhejiang Innuovo Magnetics
Est. 2003 · Dongyang, Zhejiang
Sintered and bonded NdFeB (Hengdian Group lineage); motors, automotive, and magnetic materials.
Suppliers are labelled by type so buyers can match a source to their end-use. Mainrich is listed first as our own recommendation for commercial-volume sourcing, and is labelled honestly as an international factory-direct supplier, not a domestic China producer. Company facts (location, founding year, certifications) reflect public information and may change, so verify current certifications directly with each supplier during qualification.
03 · Market
The State of China NdFeB Supply
China is a major source of sintered NdFeB and upstream rare-earth materials. Commercial production also exists in Japan, Europe and the United States. Compare the proposed manufacturing route, available volume and qualification status with the part requirements. Chinese export classification depends on the listed material and finished item; application review time and any technical identification must be considered separately from production and transit.
04 · Our Position
Where Mainrich Fits
International factory-direct
Mainrich is an international supplier serving commercial magnet programmes through a production network we hold equity stakes in. Our sintered NdFeB range is N30 to N56, with no AH grades; grade, geometry and material route require drawing review. We coordinate loose magnets and assemblies, with inspection, production-plant certification scope, documentation and delivery confirmed for the order.
Production origin is stated for the proposed part. Our supply scope is commercial industrial applications, subject to end-use review.
FAQ · Questions
Frequently Asked Questions
What share of the world's NdFeB magnets does China make?
China produces an estimated 90% of the world's finished NdFeB magnets and controls most of the upstream rare-earth refining that feeds magnet plants. Non-Chinese capacity in the US, EU, and Japan exists but is a small fraction of global output and is still scaling, so sourcing in commercial volume in 2026 means, in practice, sourcing from or through China.
What are China's rare-earth export controls, and do they affect magnets?
Classify the actual material, finished item, destination and end use under the rules in force. A grade suffix or supplier statement does not establish clearance. Where licensing is required, confirm the exporter of record, licence scope and schedule before shipment.
How do I tell a real manufacturer from a trading company in China?
Identify the contracting supplier, manufacturing site and exporter of record. Agree access to production and inspection records, design confidentiality and responsibility for defects. A supplier label or factory tour alone does not establish those controls.
What certifications should a Chinese magnet supplier have?
Confirm the quality-system and submission requirements specified by your customer. Verify the current certificate, covered activities and named production plant with the issuer. The contracting supplier and certified production entity can differ; document their responsibilities and the production route.
How can GBD affect magnet cost?
Grain boundary diffusion is evaluated against the required coercivity, material composition and magnet geometry. In a reported N45H specimen comparison, Hcj changed from 17.67 to 26.55 kOe and Br from 13.62 to 13.61 kGs. A new programme needs its own material validation and cost comparison; this specimen result does not establish a saving for another part.
Sourcing NdFeB for a China program?
Send a drawing or a target specification. Our engineering team will quote the correct grade or assembly with real design margin, and flag any end-use restrictions up front. Human response within 1 business day; pricing within 2.