The life-cycle assessment, which CEWE conducted in 2017 for its best-selling products, considers the resource-friendly use of materials to be the most relevant factor. Therefore, two measures play an outstanding role in CEWE's environmental policy:

1. The materials used are selected specifically not only in terms of their quality, but also their ecological aspects.

2. Production aims to produce as few scraps as possible and waste that cannot be avoided is disposed of in a pro-environment manner.

CEWE examines the direct suppliers of production materials for its supply chain. When purchasing through business partners, a supplier of critically-graded materials is also examined and, if need be, even their supplier. To manage and mitigate risks in the long run, a two or multiple supplier strategy is aimed for. CEWE consciously cultivates long-term relationships with its delivery companies. Even on the subject of sustainability, suppliers are expected to meet high demands. Together, the procurement process takes low costs and physical proximity in addition to ecological and social aspects into consideration. Wherever production facilities make it possible, CEWE works with local suppliers. In 2019, 56% of the materials used were already sourced locally. The goal is to engage a higher number of local suppliers in the future and to reduce CO₂ emissions in supply logistics. CEWE joined the German Association for Supply Chain Management, Procurement and Logistics (BME) ten years ago already. BME's voluntary Code of Conduct forms a baseline for ethical and fair conduct within the supply chain.