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COLLO GmbH is a family-owned German maker of cleaning, care and hygiene products. Its range covers household and appliance cleaners, car-care products and filters, sold under brands such as COLLO and Polifac. Customers are DIY stores, garden centers and trade buyers. It was founded in Cologne in 1936 and taken over by Lutz Irgel in 1980. It acquired the Polifac brand from Henkel in 1993. Directories list 50–99 employees. Public sources describe no AI product, so the 'AI company' label does not appear to fit this entity.