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Yun Jong-seop built Mexico-based contractor MMEXC through a path that began with a cotton work-glove factory and grew into construction coordination, materials supply and general contracting. In a ChosunBiz interview, he said the company reached annual sales of $100 million in unspecified boom years and expects about $80 million in 2026. He also described a future goal of connecting Korean small and midsize businesses with suitable Mexican firms; the interview does not establish that this is already a formal service.
How Yun moved from gloves into construction
Yun told ChosunBiz that he first visited Mexico in 1993, settled there in 1997 and opened a cotton work-glove factory. Supplying gloves to construction sites brought him into contact with the industry and led toward construction-related work. The Korean-language interview and its English AI translation recount this progression, but do not provide independent company records.
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From site coordination to general contracting
In 2005, Yun coordinated work at a wind-power-related site in Monclova. He then began handling construction materials, including rebar and concrete, before founding MMEXC in 2007. The company is described in the interview as a Mexico-based general contractor.
The reported progression was practical: first supplying a product used on worksites, then coordinating work and providing materials, and finally taking on general contracting. The interview presents this as Yun’s account of MMEXC’s development rather than a separately documented corporate history.
#1 Best Overall
What projects and scale the interview describes
ChosunBiz says MMEXC undertook machine-foundation work for suppliers following LG Electronics’ entry into Mexico, and later a project connected with Kia’s entry. Yun called the Kia-related job his largest project up to that point. The interview does not provide a project list, contract values or independent verification of the work.
Yun also told the publication that the team comprised 10 Korean employees and about 40 local architects. Those are interview-reported figures, not independently verified headcount. He said annual sales reached $100 million during boom years, without specifying which years. For 2026, he expected sales of about $80 million; that is a forecast, not confirmed full-year revenue or audited financial data.
Rank #2
| Figure | What it describes | Qualification |
|---|---|---|
| $100 million annual sales | Sales during boom years | Yun’s figure as reported by ChosunBiz; the years are not stated, and audited financial statements are not supplied. |
| About $80 million annual sales | Expected sales for 2026 | Yun’s forecast in the October 5, 2026 interview, not a confirmed year-end result. |
| 10 Korean employees; about 40 local architects | Reported team size | Interview figures attributed to Yun; independently verified headcount is not provided. |
The figures indicate the scale Yun reported, but they should not be read as audited financial results. The English interview is explicitly marked as AI-translated; the Korean-language counterpart is the source to consult for the original wording.
What Yun says he wants to do for Korean SMEs
Yun’s next-step ambition is to help Korean small and midsize enterprises seeking to enter Mexico find suitable local companies and connect with them. In the Korean-language interview, he describes wanting to act as an export gateway for those connections. This is a stated goal, not evidence that MMEXC or World-OKTA currently operates a referral or market-entry program.
The interview gives no program details, eligibility rules, contact route or process for requesting help. Korean companies considering Mexico entry should therefore treat the proposal as an ambition described in the profile, not as an available service with published terms.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.World-OKTA roles reported in the profile
ChosunBiz places Yun’s World-OKTA activity in the organization’s Monterrey chapter. The profile says he was a founding member in 2016, became chapter head in 2021 and was serving as Central America regional head in 2026. These roles and dates are reported by the interview; it does not describe a formal SME referral offering attached to them.
Rank #4
Sources and reporting scope
This account is based on the ChosunBiz interview published October 5, 2026 Korea time: the English AI-translated profile and the Korean-language counterpart. The reported chronology, roles, staffing and sales figures are interview claims; the sources do not supply audited accounts, a project register or independent confirmation of those numbers.
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