Hangzhou Permanent Magnet Group (HPMG)

Full-line sintered/cast permanent magnet producer: sintered NdFeB across N, M, H, SH, UH, EH and TH coercivity/temperature grades (N35 through N56 and corresponding higher-coercivity variants); samarium-cobalt (SmCo) magnets in RE2Co17 (standard, high-temperature, low-temperature-coefficient and isotropic sub-series) and RECo5 grades; AlNiCo (aluminum-nickel-cobalt) cast magnets; and magnetic assemblies / injection-molded (plastic-bonded) magnets. The company's own materials describe SmCo and NdFeB output as being at 'leading domestic production scale' within China. No publicly available source located during this research confirms specific grain-boundary-diffusion (GBD) processing or dedicated low-heavy-rare-earth (low-HRE) grade lines at this company — that capability, referenced only in internal background notes, could not be independently verified from public company literature, filings, or trade press, and should be treated as unconfirmed unless a public source is found.

At a glance

Founded: 1980 — Traces its origin to the state-owned Xiaoshan Magnetic Steel Factory (founded 1980); the company states it was 'transformed to fully private ownership and renamed Hangzhou Yongci [Permanent Magnet] Group Co., Ltd.' in 2000. A separate business-registry aggregator (36Kr Pitchhub) lists the current corporate entity's registration/establishment date as November 5, 1996, which does not fully match the company's own 1980/2000 history — see conflicts.
Headquarters: Xiaoshan Economic and Technological Development Zone, Hangzhou, Zhejiang, China
Ownership: Privately held; no evidence found of a public stock listing (A-share, H-share, or otherwise) for this entity, and no public source found identifying it as a subsidiary of a larger listed group. Company registration aggregator listings (36Kr Pitchhub) name Jia Guiyuan (贾贵元) as legal representative and report no external funding rounds ('未融资').
Revenue: Not publicly disclosed. This company does not publish revenue and no named third party has published an estimate of it.

Capacity

Each date below links to the document the figure came from. A capacity figure with no source is not on this page.

What	Figure	Status	As of
NdFeB (sintered neodymium-iron-boron) magnets, annual production capacity	approx. 2,000 t/yr	Operating	Sep 2026
NdFeB (sintered neodymium-iron-boron) magnets, annual production capacity	approx. 3,000 t/yr ("年产量达3000吨")	Operating	Sep 2026

Narrative

Hangzhou Permanent Magnet Group Co., Ltd. (also rendered as Hangzhou Yongci Group Co., Ltd.; Chinese: 杭州永磁集团有限公司) is a privately held Chinese magnet manufacturer based in the Xiaoshan Economic and Technological Development Zone of Hangzhou, Zhejiang province. The company traces its lineage to the state-owned Xiaoshan Magnetic Steel Factory established in 1980, converting to private ownership and its current name around 2000. It manufactures across all four major permanent-magnet families — sintered NdFeB, SmCo, AlNiCo, and magnetic assemblies/injection-molded magnets — supplying automotive, motor, medical device, instrumentation, telecom, home appliance, wind power and aerospace end markets, with company materials citing sales into 37 countries and regions and representative offices in Germany and the United States. It holds Chinese 'National-level Specialized, Refined, and Novel (Little Giant)' and 'National High-Tech Enterprise' designations and reports quality/management certifications including ISO 9001, IATF 16949, ISO 14001, ISO 45001 and the military-standard GJB 9001C. No public financial filings, stock listing, or third-party revenue estimate were located for this company; it appears to operate as an independent private manufacturer rather than as a subsidiary of a larger listed group, though this could not be exhaustively confirmed from public sources.

Where public sources disagree

NdFeB annual production capacity is stated as 'approximately 2,000 tons' on one company web page (chinahpmg.com/index.php/Index/file_read?id=1) and as '年产量达3000吨' (reaching 3,000 tons/year) on another company web page for the same product line (china-hpmg.com/product02.html). Both are company-published figures on affiliated domains; the discrepancy is unresolved and both are recorded above.
Registered capital is reported as RMB 40 million on the company's own 'About Us' page (china-hpmg.com/aboutus.html) versus RMB 50 million per a third-party company-profile aggregator (36Kr Pitchhub, pitchhub.36kr.com/project/2066616333877254). These may reflect different points in time (capital increases are common) but no source dates either figure.
The company's own history describes continuous operation since 1980 with a change to private ownership/renaming around 2000, while a business-registry aggregator (36Kr Pitchhub) separately lists the current legal entity's establishment/registration date as November 5, 1996. This may simply reflect a formal re-registration distinct from the operational founding date, but the two dates were not reconciled by any single public source.
No public source was found either confirming or denying grain-boundary-diffusion (GBD) magnet technology or dedicated low-heavy-rare-earth (low-HRE) grade production at this company, despite this being referenced in internal background material used to identify the company; this profile does not assert that capability.

Sources

About Us / company history — Hangzhou Permanent Magnet Group (china-hpmg.com) (2026-09)
Company homepage — Hangzhou Permanent Magnet Group (china-hpmg.com) (2026-09)
NdFeB (sintered neodymium-iron-boron) product page — Hangzhou Permanent Magnet Group (china-hpmg.com) (2026-09)
SmCo (samarium-cobalt) product page — Hangzhou Permanent Magnet Group (china-hpmg.com) (2026-09)
Company profile / history page (English site) — Hangzhou Permanent Magnet Group (chinahpmg.com) (2026-09)
Company homepage (English site) — Hangzhou Permanent Magnet Group (chinahpmg.com) (2026-09)
Company profile listing (registration data, legal representative, funding status) — 36Kr Pitchhub (2026-09)

How this page is sourced

Everything here comes from public sources — company filings, annual reports, exchange announcements, government releases and trade press. Every figure is linked to the document it came from and carries the date that document was published, because a capacity number without a date is not a fact, it is a rumor with a decimal point.

What is deliberately absent: material nonpublic information. I have spent more than two decades in this industry and a good deal of what I know about these companies I learned under NDA. Those obligations do not expire and they do not bend for a website. Nothing I have been told in confidence appears here in any form, and nothing on this page — or missing from it — should be read as a signal about what I know privately. I hold NDAs absolutely. It is the reason clients tell me things.

Judgment is the other thing left out on purpose. This page reports what has been published and who published it. Whether a target is credible, whether a ramp will hold, whether a capacity figure survives contact with the plant behind it — that is the work I do for clients, and it does not belong in a free reference page.

Where public sources disagree, I say so rather than picking a winner. Where a figure has not been published, the field says so rather than carrying an estimate. An empty field is information too.

Public filings tell you what a company has said. Whether it holds up is a different question, and the one I get hired to answer.

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