A family company undergoing change Clever products and healthy growth have made Kleinmann the worldwide leading manufacturer of cleaning products in the field of EDP and nano technology. In 2006 Kleinmann GmbH joined in the US-based ITW (Illinois Tool Work Inc.) Group. Kleinmann GmbH is now part of the financially strong and worldwide ITW group, with more than 700 companies in 45 countries and with an annual revenue of 14.2 billion US dollars.