How Professional Plastics Stayed Family-Owned for 40 Years

Part of Distributor Playbooks — strategy teardowns of every company on the 2025 MDM Top Distributors lists.

Professional Plastics lands on MDM's 2025 Top Distributors list in the Plastics category, one of roughly 220 companies Modern Distribution Management tracks across 20 product verticals. What the ranking doesn't show is the part that makes the company unusual: four decades in, it is still owned and run by the family that started it, in a corner of industrial distribution where private equity has bought up almost everyone else.

Three brothers, a garage, and a Rolodex

Larry, David, and Mike Kietzke founded Professional Plastics in October 1984, opening small locations in Anaheim and Santa Clara, California, according to the company's own history page. The pitch was narrow by design: David had spent years calling on engineers at McDonnell Douglas, Lockheed, and General Dynamics, and he knew that aerospace and defense primes needed a distributor who could get them cut plastic sheet and rod fast, in exact tolerances, without a mill-order minimum. Larry brought two decades of industry experience to back it up. A third branch opened in Phoenix by 1986.

This was, from day one, a family shop in the literal sense. Patricia Kietzke ran the company's early IT and systems. Daughter Lori did the books. A teenage Chris Kietzke worked the shipping dock. That detail matters less as color than as a preview of what the company would become: a business where the next generation was learning the operation from the floor up, years before anyone called it succession planning.

The pivot that mattered: chasing the chip fab, not the airplane

The founding bet was aerospace. The bet that built the modern company was semiconductors. By 1992, Chris Kietzke had opened a San Jose location stocking Vespel, PEEK, and Ultem, the high-performance engineering resins that wafer-fab equipment makers need for seals, wafer carriers, and chamber components. The timing lined up with the 1990s semiconductor capital boom, and revenue followed: from roughly $7 million in 1992 to $57 million by 2001, per the company's history.

That pivot also explains the company's geography. Professional Plastics didn't expand overseas to chase generic industrial demand. It followed the fabs. Singapore opened in 2007, Taiwan in 2013, and Malaysia in 2025, tracking the same semiconductor supply chain that made the San Jose branch work in the first place. Most sheet-and-rod plastics distributors are regional operators. Professional Plastics built a footprint that mirrors the map of global chip manufacturing, which is a very different company to compete against.

The moat nobody sees on the invoice: master distributor status

A generalist plastics distributor sells commodity sheet and rod on price. Professional Plastics has spent years locking up exclusive supply relationships for specialty materials that only a handful of chemical and ceramics makers produce: it's a master distributor for Saint-Gobain's Meldin, Corning's Macor technical ceramic, and Trelleborg's Turcite, and it stocks DuPont Vespel shapes, according to the company's about page. Those agreements are the real moat. A competitor can undercut on off-the-shelf HDPE sheet. It's much harder to undercut a company that is the designated U.S. channel for a material an aerospace or semiconductor engineer has already specified by brand name.

The company paired that materials exclusivity with an early e-commerce bet that looks obvious in hindsight and wasn't at the time. It launched professionalplastics.com in March 1997, a year before Google existed, and the site now processes more than $175 million in annual online transactions. For an industry still built on phone calls and will-call counters, that's two decades of compounding advantage in a channel most technical distributors only took seriously after 2015.

Staying independent while the industry consolidated around it

Here's the tension worth naming plainly: plastics and engineering-materials distribution has been a magnet for private equity roll-ups for the better part of fifteen years. Larger peers have been assembled, sold, and re-assembled by financial sponsors chasing scale. Professional Plastics took the opposite path. It grew from three founding brothers to more than 450 employees and over $275 million in annual revenue, per the company, while remaining what it calls "100% family-owned and operated." David Kietzke is chairman and CEO; Chris Kietzke, the former teenage shipping clerk, is now chief marketing officer; Mark Casey, a non-family hire who joined in 2003 to build out Eastern markets, is president of North American operations.

That structure is a genuine strategic choice, not an accident of small size. It means growth gets funded out of cash flow and modest bolt-on deals rather than sponsor capital, which is slower but doesn't come with a five-to-seven-year exit clock forcing decisions. The acquisitions on the record bear that pace out: Planet Plastics and Paragon Plastics in 2012, Amron Manufacturing's assets folded into the Chino facility in 2016, Adapt Plastics and Hi-Tech Polymers in 2019, SciCron Technologies in 2020. Steady, digestible, and self-funded, not a private-equity platform stitching together add-ons on a fund clock.

What 2025 and 2026 look like on the ground

The Malaysia branch that opened in 2025 extends the Asia semiconductor strategy into a market growing on the back of electronics and automotive manufacturing. The company also entered a distribution arrangement covering Tangent sustainable lumber sheet goods in 2025, a small but telling move into adjacent specialty materials outside pure plastics. And Buffalo-area press reported in January 2026 that the company was investing roughly $1 million to add a clean room at its Orchard Park, New York facility, expanding semiconductor-materials fabrication capacity in the Northeast. None of these are headline-grabbing moves. They're the same pattern repeating: go where the technical customer is, add capability incrementally, keep the balance sheet clean.

Distribution rewards the companies willing to specialize deep and stock exactly what a demanding buyer needs, catalog by catalog, branch by branch, for decades without a change of ownership forcing a change of strategy.