AD sponsors Groene Ster. Because sport creates the right chemistry between body and mind, AD contributes this year as a sponsor for the Groene Ster handball association from Zevenbergen. As AD Chemicals, we have the credo; Exceeding the market standard in chromium (VI) free chemical solutions. We hope that Green Star will exceed the standard in handball the upcoming season and wins the championship. We wish Groen Ster lots of sporting successes!