What ZRK does

Shandong Zhongrui Electronic Co., Ltd. (operating as ZRK / Zhongrui Electronics) is a privately held Chinese manufacturer of high-performance soft ferrite magnetic materials and finished electronic components, founded in 2004 and headquartered in the Linyi National High-tech Industrial Development Zone, Shandong Province. The company operates an integrated R&D-to-production model, holding 48 valid patents, 10 software copyrights, and a portfolio of 200+ specifications across 10+ product categories — including switching power supply transformers, planar and potted transformers, APF and EMI filters, PFC and common-mode chokes, planar and differential-mode inductors, LLC transformers, DC-DC automotive inductors, LAN/RF magnetics, and raw ferrite cores — sold under the proprietary Zhongrui (中瑞) and ZRK brands. A 5G+ Industrial Internet mass-customization platform and a 5G-enabled smart factory underpin its order-driven, large-scale customization model, with the company ranked among the top 20 in its industry by technology and industrial scale and designated a national-level 'Little Giant' enterprise.

The company sells directly to enterprise customers as a qualified supplier to Tier-1 electronics manufacturers including Lite-on Technology (Taiwan), Chicony Power, AcBel Polytech, Genmao Electronics, and Qingdao Hisense, with products exported to South Korea, Japan, Europe, and the United States. A six-office regional sales network (Qingdao, Suzhou, Changzhou, Chongqing, Hong Kong, and Taiwan) supports customer coverage across Greater China and key export markets, and end-use applications span consumer electronics, household appliances, 5G communications, rail transit, new energy vehicles, photovoltaic/storage/charging, LED lighting, and cloud computing. The company co-drafted IEC 60424-8 — China's first international standard in the magnetic materials industry — and participates in multiple national and provincial-level innovation and intelligent manufacturing demonstration programs. Revenue is generated through B2B hardware sales under a quotation-based pricing model; revenue figures, funding history, and detailed ownership structure are not publicly disclosed.

Name

ZRK

Legal name

Shandong Zhongrui Electronic Co., Ltd.

Website

https://sdzrm.com

Company type

Private

Founded year

2004

Operating status

Operating

Short description

ZRK (Shandong Zhongrui Electronic) is a privately held Chinese manufacturer of high-performance ferrite magnetic materials and electronic components — including transformers, inductors, filters, and chokes — sold under proprietary Zhongrui and ZRK brands as a qualified supplier to electronics OEMs in China, Taiwan, Korea, Japan, Europe, and the United States.

Ownership category

akta.pro rank

Product category

Magnetic Components and Ferrite Materials Manufacturing

NAICS

Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing (334416), Other Electronic Component Manufacturing (334419)

SIC

Electronic Coils, Transformers & Other Inductors (3677), Electronic Components & Accessories (3670)

akta.pro primary industry

Transformers & Magnetics (Power/Signal) (HDAHANAD)

akta.pro secondary industry

Passive Components (Resistors, Capacitors, Inductors, Ferrites) (IMAGAJAA)

Keywords

• Ferrite core manufacturing
• Magnetic electronic components
• Power transformers
• EMI filter inductors
• Soft ferrite materials

Headquarters

HQ city

Linyi

HQ country

China

HQ region

Asia

Offices7 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Technology or R&D, Infrastructure, Marketing or Sales

Revenue model

1. Magnetic Components and Electronic Parts Sales: Sale of proprietary magnetic ferrite core materials and finished electronic components including transformers, inductors, filters, and chokes. Products are sold to domestic and international electronics manufacturers. The company operates an order-driven, large-scale customization model.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels3 records

Core offering

ZRK (Shandong Zhongrui Electronic Co., Ltd.) integrates the R&D, production, and sale of high-performance soft ferrite magnetic materials and finished electronic components under its "Zhongrui" and "ZRK" brands. Its portfolio covers more than 10 product categories and 200+ specifications, including switching power transformers, planar integrated transformers, potted transformers, linear transformers, LLC transformers, APF and EMI filters, reactors, planar integrated inductors, PFC inductors, common/differential mode chokes, and ferrite cores. Products are sold as qualified components to domestic and international electronics manufacturers serving switching power supplies, consumer electronics, communications, household appliances, LED lighting, 5G, rail transit, new energy vehicles, photovoltaic/storage/charging, cloud computing, and AI applications.

Product overview

ZRK (山东中瑞电子股份有限公司) is a manufacturer of magnetic materials and electronic components offering a comprehensive portfolio of over 10 major product categories and 200+ specifications. The core product line centers on the 'Zhongrui' and 'ZRK' branded high-performance ferrite cores and electronic components. The product portfolio includes switching power supply transformers, planar magnetic integrated transformers, potting/encapsulated transformers, linear transformers, APF (Active Power Filters), EMI filters, reactors, planar integrated inductors, PFC inductors, common mode chokes (UU, FT planar, four-wire, three-phase, amorphous, automotive charger types), differential mode inductors, common-differential integrated inductors, LLC transformers (including automotive integrated versions), DC-DC automotive inductors, power transformers (PQ, EE, RM, ER/EDR, Toroidal types), LAN/network transformers, RF inductors, filter chokes, power inductors (R rod, H, I-type), and ferrite cores. These products serve applications across home appliances, industrial consumer electronics, LED lighting, 5G communication, rail transit, new energy vehicles, solar storage charging, and cloud computing/AI sectors.

Differentiator

Problem solved

Functional benefit

Brands

• 中瑞: Self-developed high-performance ferrite core and electronic component brand, part of the company's product portfolio.
• ZRK

Quantifiable outcome

• 155% year-over-year tax growth in 2016, ranking among top 150 tax-paying enterprises in Linyi High-tech Zone.
• +1 more outcomes

Named customers5 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Three partnerships are on record, tiered minor and core.

• National Thousand Talents Plan / High-end Foreign Expert ProjectsminorOthers · 1 January 2017The company has applied for government subsidy programs including the 'National Thousand Talents Plan Foreign Expert Projects' and 'High-end Foreign Expert Projects' to attract international talent, including Belarusian expert Carver Genadi Antonovich who won the 7th Yimeng Friendship Award for the 'special metal soft magnetic material production technology' project.
• Linyi High-Tech Zone Science and Technology Business IncubatorcoreStrategic or Co-development PartnerThe company was born in the Linyi High-tech Zone Science and Technology Enterprise Incubator, receiving policy, tax, and operational concessions that enabled its growth from two founders to a 300+ person enterprise. The incubator provided a supportive environment for technology startups.
• Linyi High-Tech Investment Co., Ltd.coreStrategic or Co-development PartnerThe company's Manufacturing Innovation Center was co-founded with Linyi High-Tech Investment Co., Ltd. as the core co-founder, establishing a shared basic R&D and public service platform for common materials. This joint platform serves as the foundation for the innovation center's 'small core + large collaboration' model.

Scale indicators6 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Pulse Electronics: Manufacturer of magnetics including LAN/network transformers, power inductors, and chokes for telecom, networking, and industrial customers. Direct competitor to ZRK's LAN transformers and networking magnetics, as well as its broader power inductor and common-mode choke portfolio.
• Shenzhen Codaca Electronic: Chinese specialist in power inductors, common-mode chokes, and high-current magnetics for automotive, photovoltaic, and industrial applications. Direct peer on power magnetics serving similar NEV and renewable-energy verticals that ZRK targets with its DC-DC automotive inductors and LLC transformers.
• Taiyo Yuden: Japanese passive component manufacturer producing inductors, common-mode filters, and ferrite-based devices for consumer electronics, automotive, and industrial markets. Closely comparable to ZRK on RF/PFC inductors and EMI filtering solutions targeting Asia-based electronics OEMs.
• Ferroxcube (Yageo): Specialized ferrite core and accessories manufacturer serving global power, telecom, and consumer electronics customers, now part of Yageo. Direct peer to ZRK's ferrite core materials business and shared upstream of transformers, inductors, and EMI filters.
• Sunlord Electronics: China-based manufacturer of chip inductors, power inductors, and EMI components for consumer electronics, automotive, and industrial customers. Comparable Chinese peer to ZRK with similar product categories (power inductors, common-mode chokes) serving NEV and consumer electronics OEMs in China and abroad.
• Sumida Corporation: Japan-based magnetics specialist focused on power transformers, inductors, and chokes for automotive, industrial, and consumer electronics. Highly comparable to ZRK's product portfolio including LLC, planar, and PFC magnetics, and equally exposed to NEV/photovoltaic growth verticals.

Broad incumbents

• Murata Manufacturing: Japanese electronic components giant with extensive inductor, EMI filter, and power-magnetics lines serving smartphones, automotive, and industrial customers. Comparable to ZRK on power inductor and common-mode choke categories, and on supplying consumer-electronics OEMs across Asia.
• Würth Elektronik: Major German manufacturer of electronic components including power inductors, ferrite cores, chokes, and transformers for industrial and consumer electronics. Direct competitor to ZRK in power magnetics and ferrite-based components serving similar electronics OEM customers globally.
• Vishay Intertechnology: US-headquartered broad-line passive component maker with magnetics (inductors, transformers, chokes) and ferrite product lines for power, automotive, and industrial markets. Overlaps with ZRK's transformer, inductor, and reactor catalog and the same tier-1 customer ecosystem.
• TDK Corporation: Global magnetics leader producing ferrite cores, power transformers, inductors, and EMI filters across consumer, automotive, and industrial markets. Directly comparable because ZRK's product range (ferrite cores, switching power transformers, common-mode chokes, EMI filters) overlaps substantially with TDK's magnetics portfolio.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance7 records

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about ZRK