In addition to the Gealan profiles, Oli Division also uses Deceuninck profiles with 5 chambers, renowned worldwide for their robustness and enhanced thermal coefficient. Designed in Belgium, Deceuninck profiles are known for their exceptional durability, energy efficiency, and innovative design features, making them a major competitor within the EU. Their high-quality construction ensures superior insulation and long-lasting performance, meeting the stringent standards of modern building requirements.