Additive-Chemie Luers GmbH, located in Bremen, is a subsidiary of the Diersch & Schröder Group. DS is a German-style family firm that produces and trades mineral oil products, renewable resources, chemicals, etc., and is also involved in the IT industry.

Additiv-Chemie Luers GmbH owns Estichem A/Sin Denmark (producing additives for the production of process cleaning and oilextraction).