Humintech GmbH is a German biotech enterprise based in Grevenbroich. For more than 45 years, the company has been developing products based on humic substances. The product range comprises soil conditioners and biostimulants. With customers in more than 70 countries, the company is counted among the global leaders of the industry today. Humintech uses an oxidized form of brown coal as a source for their humic substances, also known as Leonardite.