CHICAGO — The huge effort by Testa Produce Inc., to build a “green” and ultra-modern produce warehouse brings with it a sophisticated computer software system.

Testa has worked since 2003 with produce management software, and the related service, provided by Produce Pro Inc. Produce Pro software is used throughout the country, but happens to be based in nearby Woodbridge, IL.

CHICAGO — Peter Testa didn’t build the new warehouse and office facility of Testa Produce Inc., here, only because he wanted to demonstrate that the latest green technology could be incorporated into a viable modern facility.

“My motivation for doing this building was that I needed a new building.” In the process, he wanted to hold the company’s operating costs at a steady level over a period of time. “One way to do that is to be green.”

CHICAGO — He shows tomato tattoos on each arm and introduces himself as “Insane Wayne.”

Otherwise known as Wayne Passoff, his tomato company, Wayne’s World Inc., began operations on the Chicago International Produce Market in the first week of May.

The 54-year old said that he is a native of Englishtown, NJ, and is a third-generation tomato man. He moved to Chicago a decade ago after his father died. After working for other Chicago produce houses, “I decided I wanted to take my talents and experience in the tomato business and go on my own,” he said.

CHICAGO — “EveryDay” produce doesn’t have to mean “ordinary” produce. At EveryDay Fresh Produce Inc. it means service to a customer base that is in the habit of buying produce every day.

Such insight into his ethnic clientele led Steve Chmelovky to name his company eight years ago. The founder is also the president and chief executive officer of the ethnic specialties house, which is located on the Chicago International Produce Market.

CHICAGO — Dietz & Kolodenko Co., which operates from the Chicago International Produce Market, has held the same role in this produce industry for decades, according to Nick Gaglione.

Mr. Gaglione has been associated with Dietz & Kolodenko since the first half of the 1970s. He bought the company in 1994.

Dietz & Kolodenko was formed in 1963.

“We have been together, with the same people working, basically, since then. We have been known as a fruit house since the ‘git-go.’ We are mostly all fruit, with apples, pears grapes and melons,” Mr. Gaglione said.

CHICAGO — It was almost 80 years ago that Greg Mandolini’s great-grandfather, Primo Mandolini, entered Chicago’s produce industry. He started as an industry salesman and then became a partner in starting-up Gianukos & Mandolini. Eventually, Primo Mandolini bought out his partners. Greg Mandolini has run Mandolini Co. since the mid-1980s.