In 2005, Protoulis acquired the second company mill at Trygonas, operating in one of the oldest olive pressing units of the island that was constructed back in 1928 by an American expatriate family. The old, traditional equipment is displayed inside the mill in a designated area where guests have the opportunity via the special video projection to be guided in English and German through the island’s great olive oil history.

The third olive mill, located in Skopelos of Gera, was acquired by the company in 2023 with the aim of increasing olive oil production as well as expanding its partnerships. A stone-built building, comparable to the one in Trigona, where modern production machinery coexists harmoniously with the traditional equipment of past times.

Today, state of the art mechanical equipment of a cold-pressing capacity of 4.5 tons per hour is used in production. The stainless steel storage tanks have a capacity of 400 tons and are locally located at a fully controlled temperature.

The company is expanding and constantly, investing in new technologies and infrastructure. In 2013, it acquired a new bottling plant next to the old stone-built mill. This unit will exclusively produce the Protoulis top quality products, particularly the organic ones. These spaces cover a surface area of 1,000 m2 and house 350-ton stainless steel tanks with nitrogen in order to avoid olive oil exposure to oxygen.