We conduct our business with responsibility and respect toward people, cultures, countries and the environment. We respect local customs, regulations and laws.

We are proud of the good reputation which the names Diethelm and Keller have enjoyed for generations: exemplifying credibility, stability and fairness.

We are committed to the highest standards of ethics and integrity throughout our company.
It is a key requirement for employees to succeed within our organization.

Learning Culture
We foster an active, professional exchange of knowledge and expertise among our employees by providing an open environment for our multicultural, multilingual and geographically diverse staff.