Tong Ming Enterprise Co., Ltd.
Tong Ming Enterprise Co., Ltd. is a Cayman Islands-incorporated holding company (specific legal form, e.g. exempted company, not confirmed from the sources reviewed), incorporated on 30 November 2009, with its registered office at Windward 1, Regatta Office Park, 1st Floor, P.O. Box 10338, Grand Cayman, KY1-1003, Cayman Islands. The company was formed to complete the reorganisation of a stainless-steel fastener and wire business that traces back to 1995, and its common shares have been listed on the Taiwan Stock Exchange since 16 December 2013 under the stock code 5538 (commonly quoted as “Tong Ming-KY”) and ISIN KYG8919A1031.
Through its operating subsidiaries, Tong Ming Enterprise Co., Ltd. manufactures and sells stainless-steel fasteners — screws, nuts and threaded rods — and stainless-steel wire under the TONG brand, supplying customers in industrial manufacturing, kitchenware, construction and related sectors. Its principal operating subsidiary, Tong Ming Enterprise (Zhejiang) Co., Ltd., began operations in December 1995 as a Sino-foreign joint venture in the Jiaxing Economic Development Zone, Zhejiang Province, China, and was restructured into a foreign-invested joint-stock company in 2008 ahead of the group’s Cayman-level reorganisation the following year. The Zhejiang site covers approximately 152,000 square metres with a stated annual production capacity above 120,000 tonnes. According to the company, approximately 70% of group sales are generated within mainland China, where it states it holds the leading position in its domestic product segment. A second manufacturing subsidiary, Winlink Fasteners Co., Ltd., based in Taiwan, was acquired in 2012, and the group has since added further wire and fastener production capacity in Zhejiang, including a wire-production facility that began operating in June 2022 and an additional fastener facility that began operating in October 2023.
For the 2025 fiscal year, financial data compiled from the company’s reported results shows consolidated revenue of approximately NT$12.7 billion, up around 1.5% from fiscal 2024, and net income of approximately NT$608.1 million, up around 5.6% year on year, with reported earnings per share of NT$3.02; these figures have not been independently re-verified against the company’s original financial statements filed with the Taiwan Stock Exchange’s Market Observation Post System and should be treated as company-level, not further-adjusted, figures. Separately reported data puts the group’s workforce at approximately 700 employees. Zavia’s registry lists the company’s current status as Active with the Cayman Islands General Registry.
- Company fundamentals
- Corporate linkage & group structures
- Digitized company financials
- Firmographics — websites, social profiles, revenue and employee estimates
Shareholders
3
Tong Ming Enterprise Co., Ltd. is a publicly traded company listed on the Taiwan Stock Exchange (TWSE: 5538), so its ownership is disclosed mainly through TWSE major-shareholder reporting and periodic ownership summaries rather than through a full, continuously updated shareholder register of the kind maintained for private companies. Compiled ownership data referencing the company’s disclosed shareholder base indicates a free float of only around 12%, with the top 15 shareholders together said to hold roughly 88.34% of outstanding shares — consistent with a closely held, founder-controlled company. Two corporate holders identified in that data, Richard International Co., Ltd. and Tong One Holdings Limited, are each reported to hold approximately 11.9% of the company; both entities also hold board seats on Tong Ming Enterprise Co., Ltd. (represented respectively by Tsai, Yi-Ting and, on two board seats, by Ko, Wen-Ling and Tsai, Cheng-Hsiung), which is consistent with them being founder-family holding vehicles rather than unrelated financial investors, though no official filing was located that itself states this characterisation.
Ultimate beneficial ownership
No official beneficial-ownership filing naming an individual ultimate beneficial owner of Tong Ming Enterprise Co., Ltd. was identified. Richard International Co., Ltd. and Tong One Holdings Limited are themselves corporate shareholders; a complete, dated ownership chain from either entity to a named individual was not located in the sources reviewed, so no effective UBO percentage can be calculated for this profile. This should not be read as evidence that no such individual exists — only that a verifiable chain was not found.
Data availability
Shareholder disclosure for Tong Ming Enterprise Co., Ltd. is best described as major shareholders only: TWSE-listed companies report concentrated holdings and directors’/major-shareholders’ shareholdings, but Zavia did not access the underlying TWSE Market Observation Post System filings directly for this profile, and the percentages above come from a third-party compilation of that disclosed data rather than from the primary filing itself. Data-quality note: Zavia’s own on-file shareholder register for this company lists only three Dimensional Fund Advisors-affiliated funds, with reported percentages of 7.55%, 84.91% and 7.55% that sum to exactly 100% among themselves. Given the company’s reported free float of only around 12% and the founder-family holding vehicles identified above, these three fund records almost certainly do not represent the company’s complete shareholder base; they more likely reflect one institutional manager’s relative holdings across its own fund family than a full share of Tong Ming Enterprise Co., Ltd.’s total outstanding shares, and should not be read as the company’s shareholder register.
Sources
- Tong Ming Group (official corporate website), Board of Directors. https://eng.tonggroup.com.tw/board-of-directors.html
- Tong Ming Group (official corporate website), Company History. https://eng.tonggroup.com.tw/history.html
- Compiled TWSE ownership data referencing Tong Ming Enterprise Co., Ltd. free-float and major-shareholder percentages (secondary source; not independently re-verified against the primary TWSE filing).
- Retrieved 11 September 2026.
Registry feed — rows exactly as filed with Cayman Islands General Registry, including entries the profile above does not cover.
| Shareholder | Type | Holding | Source Document |
|---|---|---|---|
| DFA Emerging Markets Core Equity Portfolio | 84.9% | Cayman Islands General Registry | |
| DFA Investment Dimensions-Emerging Markets Social Core Equity | 7.5% | Cayman Islands General Registry | |
| DFA Investment Dimensions-DFA Emerging Mkts Value | 7.5% | Cayman Islands General Registry |
Officers
6
Tong Ming Enterprise Co., Ltd.’s current board, per the company’s own investor-relations disclosure, comprises nine directors — five regular directors (including two seats held by corporate directors) and four independent directors — all elected at the shareholders’ meeting of 19 June 2025 for a three-year term running to 18 June 2028. Chairman Tsai, Ching-Tung has served as a director since the company’s original election on 30 November 2009 (the date of incorporation), and Tsai, Hung-Chuan, first elected 13 May 2013, serves as a director and as the company’s President and General Manager. Two board seats are held by corporate directors — Richard International Co., Ltd. (represented by Tsai, Yi-Ting, first elected 9 June 2017) and Tong One Holdings Limited, which holds two seats (represented by Ko, Wen-Ling, first elected 13 May 2013, and by Tsai, Cheng-Hsiung, newly elected 19 June 2025). The four independent directors are Ko, Yung-Hsiang (first elected 2013), Yang, Po-Min and Chen, Yung-Lung (both first elected 2022), and Tsai, Tsai-Wei (newly elected 2025). Separately, secondary sources report Tsai, Cheng-Hsiung as also holding the executive role of Vice President and Finance Supervisor, and as having taken on the Corporate Governance Officer function in 2025.
Recent officer changes
- Tsai, Tsai-Wei was newly elected as an independent director effective 19 June 2025. Source: Tong Ming Group, Board of Directors page.
- Tsai, Cheng-Hsiung was newly elected as a director (as representative of corporate director Tong One Holdings Limited) effective 19 June 2025, and secondary sources report he assumed the Corporate Governance Officer function the same year. Source: Tong Ming Group, Board of Directors page; compiled company-profile data.
- The full board was re-elected for a new three-year term on 19 June 2025, replacing the term that would otherwise have run from the prior 2022 election. Source: Tong Ming Group, Board of Directors page.
Data availability
Nationality is not disclosed for any director or officer in the sources reviewed and is treated here as “Not disclosed” rather than inferred from name, correspondence address or country of residence. Zavia’s on-file registry records correspondence addresses in the Cayman Islands (KY) for most officer entries and in Taiwan (TW) for one; these are correspondence/address-country values only and are not evidence of nationality or residence. Data-quality note: Zavia’s on-file officer list includes two separate entries — “Xianying Yan” and “Hsien-ying Yen” — with the identical job title “Accounting Supervisor & Corporate Governance Officer” and the same Cayman Islands (KY) correspondence-address country. These two names are almost certainly two Latin-script transliterations (pinyin and a Wade-Giles-style romanisation) of the same Chinese name, and this is very likely a single person duplicated across two records rather than two current office-holders; it does not appear to be the same person as Tsai, Cheng-Hsiung, who independent sources report as having taken on the Corporate Governance Officer function only in 2025, suggesting the duplicated “Yan/Yen” record may reflect a predecessor in that specific function. The on-file list also does not include several current board members confirmed on the company’s own website, so it should be treated as partial rather than a complete or current officer register.
Sources
- Tong Ming Group (official corporate website), Board of Directors. https://eng.tonggroup.com.tw/board-of-directors.html
- Compiled company-profile data referencing Tsai, Cheng-Hsiung’s Vice President/Finance Supervisor/Corporate Governance Officer role (secondary source).
- Retrieved 11 September 2026.
Registry feed — rows exactly as filed with Cayman Islands General Registry, including entries the profile above does not cover.
Group Structure
Tong Ming Enterprise Co., Ltd. is the Cayman Islands-incorporated holding company at the top of the Tong Ming group, established in 2009 specifically to complete the group’s corporate reorganisation ahead of its 2013 Taiwan Stock Exchange listing; no evidence was found of any entity holding a controlling stake in Tong Ming Enterprise Co., Ltd. itself; it is therefore treated here as the ultimate parent of the group. The company’s principal operating subsidiary, confirmed on its own official website, is Tong Ming Enterprise (Zhejiang) Co., Ltd. in Jiaxing, Zhejiang Province, China, which began as a 1995 Sino-foreign joint venture and was restructured into its present form in 2008. A second confirmed subsidiary is Winlink Fasteners Co., Ltd., a Taiwan fastener manufacturer acquired by the group in 2012. Zavia’s own registry data additionally records two intermediate holding entities in the ownership chain, Tong Group Limited and China Rich International Holding Limited, both registered in Hong Kong; these were not independently confirmed against a Hong Kong companies-registry filing for this profile but are consistent with the tiered Cayman-to-Hong Kong-to-China holding structure the company describes in its own history disclosure. Data-quality note: Zavia’s top-level registry field for this company’s own registration number is empty, even though Zavia’s own group-structure data elsewhere records a Cayman Islands registration number of KY 233975 for this same entity; this appears to be an internal data-completeness gap (the number exists in Zavia’s data but was not copied into the main registration-number field) rather than a conflict, but it has not been independently re-verified against a Cayman Islands General Registry search, which does not offer free public company-number lookup.
Verified corporate relationships
| Entity | Country | Registration number | Relationship | Ownership | Status | Information date |
|---|---|---|---|---|---|---|
| Tong Ming Enterprise Co., Ltd. | KY | KY 233975 (per Zavia registry data only; not independently re-verified; see data-quality note above) | Ultimate parent (target company) | Not applicable | Active | 2026 |
| Tong Ming Enterprise (Zhejiang) Co., Ltd. | CN | Not disclosed | Indirect subsidiary (principal operating subsidiary, per official company website) | Ownership percentage not disclosed | Active | 2026 (per company website) |
| Winlink Fasteners Co., Ltd. | TW | TW 97046185 (per Zavia registry data; not independently re-verified) | Subsidiary (acquired 2012, per official company website) | Ownership percentage not disclosed | Active | 2026 (per company website) |
| Tong Group Limited | HK | HK 38924288 (per Zavia registry data; not independently re-verified) | Possible relationship — intermediate holding entity per Zavia registry data only | Ownership percentage not disclosed | Not independently confirmed | 2026 (per Zavia registry sync) |
| China Rich International Holding Limited | HK | HK 38904151 (per Zavia registry data; not independently re-verified) | Possible relationship — intermediate holding entity per Zavia registry data only | Ownership percentage not disclosed | Not independently confirmed | 2026 (per Zavia registry sync) |
Data availability
Corporate-linkage information for Tong Ming Enterprise Co., Ltd. is best described as partial: the company’s own website confirms its two principal manufacturing subsidiaries by name, but does not publish an ownership-percentage chart, and the two Hong Kong holding entities recorded in Zavia’s registry data were not independently confirmed against a Hong Kong Companies Registry filing for this profile.
Sources
- Tong Ming Group (official corporate website), Subsidiaries. https://eng.tonggroup.com.tw/subsidiaries.html
- Tong Ming Group (official corporate website), Company History. https://eng.tonggroup.com.tw/history.html
- Retrieved 11 September 2026.
Tong Ming Enterprise Co., Ltd.
Cayman Islands
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Frequently Asked Questions
What is Tong Ming Enterprise Co., Ltd.?
Tong Ming Enterprise Co., Ltd. is a Cayman Islands-incorporated holding company, incorporated on 30 November 2009, that owns the operating businesses of the Tong Ming group, a manufacturer of stainless-steel fasteners and stainless-steel wire sold under the TONG brand.
Where is Tong Ming Enterprise Co., Ltd. registered?
The company is registered in the Cayman Islands, with its registered office at Windward 1, Regatta Office Park, 1st Floor, P.O. Box 10338, Grand Cayman, KY1-1003, Cayman Islands.
Is Tong Ming Enterprise Co., Ltd. a publicly listed company?
Yes. Its shares have traded on the Taiwan Stock Exchange since 16 December 2013 under stock code 5538 (quoted as "Tong Ming-KY"), with ISIN KYG8919A1031.
What does Tong Ming Enterprise Co., Ltd. actually manufacture?
Through its operating subsidiaries, the group manufactures stainless-steel fasteners, including screws, nuts and threaded rods, and stainless-steel wire used in applications such as small-screw manufacturing, kitchenware, mesh belts and springs.
Where is Tong Ming Enterprise Co., Ltd.'s main production facility?
Its principal operating subsidiary, Tong Ming Enterprise (Zhejiang) Co., Ltd., is based in the Jiaxing Economic Development Zone, Zhejiang Province, China, on a site of approximately 152,000 square metres with an annual production capacity stated to exceed 120,000 tonnes.
When was the Zhejiang operating subsidiary founded?
It began in December 1995 as a Sino-foreign joint venture and was restructured into a foreign-invested joint-stock company in 2008, ahead of the Cayman holding company's formation in 2009.
Does Tong Ming Enterprise Co., Ltd. have subsidiaries in Taiwan?
Yes. Winlink Fasteners Co., Ltd., a Taiwan-based fastener manufacturer, was acquired by the group in 2012, according to the company's official website.
Who is the chairman of Tong Ming Enterprise Co., Ltd.?
Tsai, Ching-Tung is listed as Chairman on the company's official investor-relations Board of Directors page, having served as a director since the company's original election on 30 November 2009.
Who is the current President of Tong Ming Enterprise Co., Ltd.?
Tsai, Hung-Chuan, a director since 13 May 2013, is reported as the company's President and General Manager in addition to his board seat.
How many directors are on the board of Tong Ming Enterprise Co., Ltd.?
Nine: five regular directors, two of whose seats are held by corporate directors (Richard International Co., Ltd. and Tong One Holdings Limited, the latter holding two seats), plus four independent directors, all elected 19 June 2025 for a term through 18 June 2028.
Who are the major shareholders of Tong Ming Enterprise Co., Ltd.?
Compiled ownership data indicates a free float of only around 12%, with corporate holders Richard International Co., Ltd. and Tong One Holdings Limited each reported to hold approximately 11.9%; both entities also hold board seats, indicating founder-family control, though the underlying primary TWSE filing was not directly accessed for this profile.
Does Tong Ming Enterprise Co., Ltd. have a verified ultimate beneficial owner?
No individually named ultimate beneficial owner with a complete, verifiable ownership chain was identified in the sources reviewed for this profile.
What percentage of Tong Ming Enterprise Co., Ltd.'s sales come from mainland China?
The company states that approximately 70% of group sales are generated within mainland China, where it says it holds the leading position in its domestic product segment.
What was Tong Ming Enterprise Co., Ltd.'s revenue in fiscal year 2025?
Financial data compiled from the company's reported results shows consolidated revenue of approximately NT$12.7 billion for fiscal 2025, up around 1.5% from fiscal 2024, with net income of approximately NT$608.1 million.
Is the "Tong Ming Enterprise" that trades on the Taiwan Stock Exchange the same entity as this Cayman Islands-registered company?
Yes. The Taiwan Stock Exchange-listed entity (ticker 5538) is itself the Cayman Islands-incorporated holding company, Tong Ming Enterprise Co., Ltd. — this is a common structure for Taiwan-linked groups that list an offshore holding company rather than the onshore operating subsidiary directly.