OTI Greentech Group provides products and services to the maritime, infrastructure and oil & gas industries worldwide.

A wide range of product and technology solutions are provided through its two subsidiaries. The OTI Greentech Group currently has over 20 employees in Europe and the USA .

OTI Greentech AG is listed on the Düsseldorf Stock Exchange (WKN A2TSL2). OTI Greentech’s corporate headquarters are located in Berlin, Germany.

Patented technology

OTI Greentech's surfactant based patented technology provides innovative sustainable and cost-efficient solutions for various industrial cleaning challenges, with potential for application in land remediation.

Long experience

Through its group companies, VTT Maritime and Rada Engineering & Consulting, OTI Greentech has more than 30 years of experience providing engineering services and project management on complex maritime operations and infrastructure projects in Northern Europe, as well as carrying out inspections of vessels globally.

Provider to the global shipping industry

A full range of products, technology solutions and services are provided to the global shipping industry in all major ports via the UNIservice Global joint venture.


Dr. John C. Kisalus

Supervisory Board

Andrew Schwager
Paul R. Morris
Vice Chairman
Nicholas Reginald Elmslie

Mission & Strategy

The OTI Greentech group is to become established as a leading provider of innovative Cleantech chemicals and other products and services to the Maritime, Infrastructure and Oil & Gas industries.


Build a company with > EUR 10m recurring annual revenues with a comfortable profit margin by 2020.