Mr. José Marangoni, was founded the company, carrying out minor repairs. In 1944, the company began manufactu ring power transformers.

Marangoni establishes itself as a trusted supplier and manufacturing benchmark in Brazil and across South America.

The new metalworking division is inaugurated, laying the foundation for the company’s current production plants. Around the same time, Marangoni becomes part of the ABB Group.

Marangoni implemented ISO 9001 and a corporate governance program. Following another invitation from Siemens, a new unit, Marangoni DOO., was established in Croatia.

The galvanizing plant was launched in 2006, and the road safety plant in 2007.

The “Skunk Works” department was created as a core innovation hub dedicated to the development and promotion of new Technologies.

Marangoni formed a partnership with a Ukrainian startup to manufacture and sell the Mosqitter Brazil—an eco-friendly pest control solution.

The Marangoni industry is consolidated, with the expansion of its product portfolio for the Brazilian market.

Marangoni expands its operations by producing cooling systems for power transformers—radiators, cooling fans, and butterfly valves. During this period, Brown Boveri acquires a 30% stake in the company.

Invited by Siemens, Marangoni opened it’s first international branch Marangoni Andina, in Bogota, Colombia. It later repurchased its shares from ABB, returning to full Brazilian ownership.

Marangoni entered a joint venture with Meiser, a German company, establishing Marangoni•Meiser to specialize in metal grating.

In partnership with Road Steel, part of Gonvarri Industries (Spain company), the company expanded its production and supply of road safety systems.

ISO 14001 was implemented as part of its commitment to environmental management.

In 2025, the company expanded internationally with the establishment of Marangoni•Meiser USA, headquartered in Indianapolis, IN, with the goal of serving power transformer manufacturers across the United States.