- Water Purification and Supplying
- Water Reuse
- Water and Wastewater Treatment
- Sewage sludge
- Waste Management
- Remediation Services
- Waste to Energy
- Renewable Energy
- Oil & Gas (On Off Shore – Up Midstream
- Trading of goods and commodities, including oil and gas
- Technology Solutions and Process Applications
- Design, Construction Management and Operation
- Procurement of goods and servicesfor Engineering Projects
- Project Finance Structuring
- Finance Consulting
- Project Management
- Oil & Gas Consulting Services
- Eastern Europe
- US Gulf
- Latin America
- Middle East
- North Africa
- Far-east (China and India)
- Larkalis Trading & Services GmbH
- Larkalis Umwelttechnik GmbH
- Larkalis Projetos e Serviços Ltda
- Larkalis Chile SPA
- Larkalis USA, LLC
- Festung International Co Limited