| 1957 | The Toftejorg Group was founded with the aim of supplying systems, services and technology for automated cleaning of the inside of tanks in almost all industries. |
| 1992 | The BLABO® system was developed. This automated cleaning technology is designed for cleaning black oil tanks. Patent obtained the same year. |
| 1995 | Toftejorg Technology A/S was established to focus specifically on the needs of the oil and petrochemical industries. |
| 1998 | The Toftejorg Technology Partner Network was established. This allowed Toftejorg Technology to focus on developing its technologies, leaving the cleaning of tanks to specialised service providers. |
| 2001 | Dansk Erhvervsinvestering A/S and House of Businesspartners A/S aquired 55% of the share capital in Toftejorg Technology. |
| 2002 | The MoClean® system was launched. This automated cleaning technology is designed for cleaning 'white oil' tanks. |
| 2003 | Toftejorg Technology A/S becomes independent from the Toftejorg Group. Homarus Holding takes over the shares from the Toftejorg Group. |
| 2005 | Toftejorg Technology A/S changes name to Oreco A/S to reflect an increasing commitment on the oil recovery and tank cleaning industry. |
| 2007 | Oreco launches the Oreco NitroGen - a range of Nitrogen generators designed especially for the oil and gas industry. |