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Gainline Capital Partners Portfolio Company M&M International Acquires KC Tech, Expanding Medical-Grade Tubing Capabilities

July 7, 2026

Transaction is part of M&M’s multi-year organic growth and acquisition strategy

STAMFORD, Conn., June 30, 2026 /PRNewswire/ — Gainline Capital Partners (“Gainline”) announced today that its portfolio company M&M International (“M&M”), a leading manufacturer of precision-engineered stainless-steel tubing primarily servicing the medical device market, has acquired KC Tech, a strategic partner and fellow manufacturer that also focuses on the medical device market.

The acquisition will significantly expand M&M’s manufacturing capabilities and broaden its product portfolio by adding KC Tech’s complementary line of larger diameter tubing. “This acquisition will increase our ability to provide high-quality, specialized solutions to meet our customers’ evolving needs,” said Jeff Robertson, M&M’s CEO. “Having worked with the KC Tech team for over a decade, we are confident not only in the quality of their manufacturing processes, but also in the talent of their management and employees, who will become part of M&M.”

“KC Tech has been a family business for over twenty years, and joining M&M marks an exciting new chapter for all of us,” said Terry Park, CEO of KC Tech. “We share a commitment to innovation and customer service, and together we’ll deliver even greater value to the medical device supply chain.”

Founded 33 years ago, M&M is a leading producer of 304, 316-grade and 17-7 stainless steel small-diameter tubing for medical devices and other high-precision applications. Gainline acquired the company in July 2024 and hired an experienced U.S.-based management team to accelerate its next phase of growth. “Our plan from the outset was to drive both organic growth and pursue strategic add-ons to scale the business,” said Rob Dellinger, Partner at Gainline. “The acquisition of KC Tech is an exciting next step in M&M’s growth.”

About Gainline Capital Partners

Gainline Capital Partners is a private equity firm that invests in U.S.-based middle-market companies. The firm invests in established, growth-oriented companies prioritizing first institutional capital partnership opportunities, helping execute management teams’ vision, driving sustainable growth, and creating long-term value. For more information, visit www.gainlinecapital.com.

About M&M International

Founded in 1993 and headquartered in Edison, NJ, M&M International operates manufacturing facilities in South Korea, serving a global customer base. The company supplies precision small-diameter metal alloy tubing for demanding medical and high-tech applications — delivering best-in-class quality, value, and service. For more information, visit the Company’s website at https://mmtubing.com.

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    Rich From Massachusetts

  • We’ve been a loyal customer of this tubing company since 1999, and their products have consistently delivered exceptional quality and durability through every project. From seamless performance to reliable support, they’ve never let us down over the decades. Highly recommend them for anyone needing top-tier tubing solutions!

    Cole G from Ohio

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    Matthew Brenno, Marshall Manufacturing

  • Matt has been fantastic! Very responsive and accommodating. Also: great attention to detail. Of course, I know he has a lot of people dedicated to supporting him, so the effort and compliments are certainly to the entire team.

    Rich From Massachusetts

  • M&M Tubing are very responsive, cooperative, and great partners to our manufacturing in Connecticut. I have come to rely on them as trusted partners to our business.

    Jeff from CT

  • We trust M&M for all our stainless-steel tubing needs. No matter how large or small the order is, they deliver on time and maintain excellent quality. Their professionalism and consistency make them an invaluable part of our supply chain.

    Jason from California

  • Beginning with Matt, you have all been a breath of fresh air working with us regarding our predicament. I personally have enjoyed our wonderful business partnership for well over 30 years (beginning with Grace!), and you have really become a critical asset for our success. What a great team you have!

    Rich From Massachusetts

  • The quality and consistency of M&M material is commendable, and their pricing on higher production volumes cannot be beaten! Additionally, every contact I have interacted with has been knowledgeable, efficient and an overall pleasure to work with.

    Stephen from CT

  • The recent addition of our second inventory location in Costa Rica strengthens M&M’s global tubing supply chain by reducing risk, mitigating tariff exposure, and improving delivery times for our growing international customer base.

    2025 was an exciting year for M&M, and 2026 will bring even more capabilities, expanded capacity, and exciting announcements.

    Chris Pleibel, CCO M&M

  • We have worked with this amazing team since 2009. Not only does this team have a quick turnaround on quote request, but they have some of the best pricing and lead times we have seen. They have earned our continued business. Looking forward to the years to come.

    Shannen H., Michigan