The old logo depicted chambers of a purification system and a drop of water. In the rebranding, the existing color scheme was respectfully quoted and refreshed. One water drop now forms the main part of the logo to show the added value the customer gets when commissioning Dülk & Kosub: clean water. A faintly indicated chamber forms a “D” together with the drop. The wordmark underneath highlights the core competence, and visually communicates cleanliness and efficiency in its typography.