The anodising process has long been considered as extremely detrimental to the environment, and manufacturers found it more and more difficult to supply high-quality surfaces.


Siekmann GmbH has built a most modern purification plant for waste water and exhaust air which fully complies with the requirements of environmental protection.

Our facilities are considered exemplary for treatment and recycling of substances. This is an investment that not only boosts the quality of our products but will also safeguard the continued existence of our facilities.