Shareholders and CEO

Combining strengths

The shareholders of Zentek are leading concern-independent medium-sized waste disposal companies in Germany. Together, they founded Zentek in 1995 with the aim of acting as a stand-alone provider of supra-regional waste disposal services on the market and to be actively independent.

At Zentek we have constantly monitored this assignment since the company was founded and for all our businesses and therefore have steadily expanded the spectrum of our own services.

Jakob Becker GmbH & Co. KG

The Jakob Becker Group, with a company base in Mehlingen, is represented at more than 50 locations in Germany and neighbouring countries. The traditional, medium-sized family company is committed to providing a proper and up-to-date disposal and recycling process with more than 1,950 employees and 750 vehicles.

Nehlsen AG

Nehlsen AG is one of the top ten companies in the German waste disposal sector. In the waste disposal and recycling, cleaning, logistics and facility services divisions, 4,500 employees offer innovative and resource-saving services every day at 60 locations in Germany, Europe and Africa.

Stratmann Städtereinigung GmbH & Co. KG

The Stratmann Städtereinigung, based in Bestwig, is a regional full-service provider in the field of disposal and recycling. The family-run company has a dense network of locations with 15 locations and facilities. More than 380 employees work for the company in North Rhine-Westphalia, North Hessen and Dresden.

Management Board at Zentek

The innovative power of the waste disposal industry has led to the fact that waste is disposed of and recycled today. Our industry contributes significantly to the protection of natural resources. By closing cycles, we are active environmentalists because we contribute to the reduction of CO2 emissions. At the same time, we are able to enter into a self-supporting resource management.

Because of their manifold benefits, waste is also economic goods. That means: Private waste management is market economy. Our objective is therefore always to carefully balance the requirements of economy and ecology - as the more successfully we market our waste, the higher the benefits for our customers.

At Zentek, we have made it our mission to develop and market innovative and economically viable disposal solutions. We focus on volume bundling, logistics optimisation and synergy potential. We find the potential for optimisation in the disposal, which can open up for supra-regional companies with the introduction of a comprehensive concept. In this way, we are doing our part to make the companies of our customers successful and profitable.

Christoph Ley


Christoph Ley


Christoph Ley has been part of Zentek's management board since 2012. He is responsible for sales and new business areas. Christoph Ley is a graduate in business administration and has many years of experience as CEO in the waste disposal industry, the wood-based materials industry and the chemical industry.