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Rolle Ariosto founds the company "Rolle Ariosto Impianti Industriali", acting in the field of prefabrication and installation of industrial piping.

1935
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Rolle Ariosto's company starts the production of equipment for the chemical industry. In view of the future expansion of the company Rolle Ariosto purchases a nearby land where a 1,200 MT/Y Phthalic Anhydride production plant from Naphthalene, owned by company "Silna Chimica", is available for sale.

1948
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Rolle Albino, Ariosto' son, starts some reconditioning/revamping activities on "Silna Chimica" PA plant, so achieving the result to restart-up the plant and enhancing the production capacity to 2,000 MT/Y.

Rolle manufactures its first Mercury cooled PA Reactor with innovative round-shaped reaction tubes instead of the usual squared ones.

1958
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Company "Rolle Ariosto & Figli" (former "Rolle Ariosto Impianti Industriali") manufactures its first PA Reactor with own proprietary technology&know-how with Salt mixture as cooling medium instead of Mercury, and with external Salt Pump and Salt Cooler.

1965
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Albino Rolle founds company "Zarocat" in partnership with Dr. Zamboni, expert in chemistry. Company business merges the experiences of Albino Rolle in Phthalic Anhydride production process and the skills of Dr. Zamboni, for the research and development of formulations for oxidation catalysts.

1970
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"Zarocat" manufactures its first Switch Condensers with own proprietary technology&know-how to company "Carboquimica" (Colombia).

1974
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First turn-key plant for plasticizers production with "Zarocat" own proprietary technology&know-how is delivered to company "Plastifay Kimya Endustrisi" (Turkey).

1976
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"Zarocat" delivers its largest (15,402 tubes) PA Reactor to company "Vulcan Material Plastico" (Brazil), now "Petrom"; this Reactor is still in operation after 40 years.

1978
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"Zarocat" delivers its first Formaldehyde Reactor with own proprietary technology&know-how to company "Prvimaj" (Yugoslavia).

1979
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"Zarocat" is one of the worldwide leading companies in the supply of key equipment, plants and catalyst for the production of Phthalic Anhydride.

1980
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Albino Rolle establishes the new company RolleChim S.r.l., in place of Zarocat, with the aim to focus and implement the supply of equipment, catalyst and services for PA process production and all main PA process value added down stream products.

1983
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"RolleChim" manufactures its first Maleic Anhydride Reactor's Package with own proprietary technology&know-how to company "Oxipar" (Brazil).

1989
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"RolleChim" performs for the first time an aircraft delivery of a PA Reactor (11,961 tubes) to company "Omskhimprom" (Russia).

1992
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More than 50% of South American PA production is achieved in PA plants having RolleChim's technology&know-how.

1996
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"RolleChim" awards from company "BASF" the biggest single order for the delivery of Switch Condensers: No.13 RolleChim Switch Condensers to Germany (No.4 x 4,000 sqm) and to Belgium (No.9 x 3,750 sqm).

2002
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"RolleChim" manufactures with own proprietary technology&know-how its biggest Maleic Anhydride Reactor's Package to company "Technobell" (United Kingdom) and End-User "MOL Plc's Danube Refinery" (Hungary).

2006
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"RolleChim" starts up its largest (40,000 MT/Y) Phthalic Anhydride production plant to company "Esfahan Petrochemical Company" (Iran).

2009
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"RolleChim" enhances its process technologies to produce new Eco-Plasticizers, Formaldehyde and a wide range of Resins.

XyPross Division is established.

2015
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"RolleChim" consolidates its reputation in the supply of engineering/supervision activities, process know-how and key equipment for the production technologies in its portfolio.

2018

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