Effective environmental protection extends beyond the boundaries of an individual company. Environmental aspects also play an important role in the relationships between ZF and its suppliers. Environmental protection is a key element of quality assurance.
ZF recommends that suppliers establish an environmental management system (EMS) in order to continuously and sustainably improve their environmental performance standards. In 2001, ZF asked its primary suppliers to present their current environmental standards. The results were encouraging: significant improvement was found in practically all areas. According to the reports presented, 30% of all suppliers had a certified EMS in place. In 1990, only 20% of suppliers had environmental management systems.