Information for investors

About Intero Integrity Services

Intero Integrity Services is a global leading inspection and industrial services provider to the oil, gas refining and petrochemical industries. Formerly operating as A. Hak Industrial Services it built an excellent track record in providing total integrity solutions with state-of-the-art techniques and qualified employees. Operating all over the world, Intero Integrity Services enhances the integrity and performance of customers’ critical assets from design to end-of-life. 

About First Reserve

First Reserve is a leading global private equity investment firm exclusively focused on energy. With 35 years of industry insight, investment expertise and operational excellence, the Firm has cultivated an enduring network of global relationships and raised approximately USD $31 billion of aggregate capital since inception.  First Reserve has completed over 650 transactions (including platform investments and add-on acquisitions), creating several notable energy companies throughout the Firm’s history. Its portfolio companies operate on six continents, spanning the energy spectrum from upstream oil and gas to midstream and downstream, including resources, equipment and services, and associated infrastructure.  Please visit for more information.