has for over thirty years been the industry leader in the design, engineering and manufacture of polymer concrete electrolytic cells with its world renowned UNICELL® technology. STEULER-CTI and UNICELL® are synonymous with innovation and quality. With over 44,000 UNICELLs® in service world-wide, a current global market share of more than 70%, and with a global reach in both manufacturing and marketing, STEULER-CTI’s ability to provide superior technology in a competitive environment is unsurpassed world-wide.

Acquisition Announcement

The Steuler Group based in Höhr-Grenzhausen, Germany and known world-wide for its unique combination of innovative materials developments and corrosion protection technologies today announces its acquisition of the Corrosion Technology International Group. Headquartered in Ghent, Belgium, CTI as it is universally known has been the global leader in the engineering, design and manufacture of electrolytic cells and other polymer concrete products for the non-ferrous metals refining industry for over thirty years under its UNICELL® brand name.

The transaction during a healthy period of growth for CTI reflects the desire of its founders and owners to ensure a seamless transition to the next chapter in its successful operation.

With products installed in over thirty-three countries, CTI’s emphasis on quality products along with focused customer service fits ideally with Steuler’s business approach and complements its existing product range in the corrosion protection market. With many existing customers in common, the addition of the technology and resources of CTI to the Steuler Group will enable added synergistic solutions to corrosion problems via its global network.

To reflect this synergy, the company was re-named STEULER-CTI N.V. Steuler’s commitment to the acquisition will ensure that the CTI name and the UNICELL® brand will continue to prosper and grow as a new engineering and business perspective is brought to an iconic company.



STEULER-CTI’s renowned problem solving capability has enabled customers worldwide to reap the benefits of the UNICELL® technology while improving productivity within the tank house.


Product reliability means years of trouble free service, and if a problem does arise, our warranty means STEULER-CTI is going to be there to fix it.


STEULER-CTI has always brought a moral approach to business. We pride ourselves on our ethical business approach, and fairness to all stakeholders is the cornerstone of our business.


STEULER-CTI’s quality policy is simple – quality first, every time. Our quality ethic covers the entire process of our business, from customer contact through design to manufacture and delivery. Our production operates a manufacturing system with stringent quality specifications and inspections.


With over 44,000 UNICELLs in service throughout all regions of the world, STEULER-CTI brings un-paralleled experience to the market. With over thirty years of experience in the electrolytic cell business, there is barely a problem we have not dealt with before.

Global Coverage

With a global network of partners and licensees throughout the world, STEULER-CTI is always within customer reach, making on-site service and fast reaction time a proven reality.



Nizagara 100m