We are ATH

We are KROENERT, COATEMA, DRYTEC and ZAE. We are the companies of the ATH Group would like to introduce ourselves in more detail through our team. 


We are ATH. Pleased to meet you!

As the umbrella company of a group made up of tradition-steeped, somewhat more recently established but consistently innovative members, we attach great importance to a sense of togetherness. In the ATH Group we’re colleagues – not just people who happen to work for the same company! In order to give you more of an insight, we conducted brief interviews with some of our colleagues and asked them to describe themselves and their field of work in more detail. We also wanted to hear about their most interesting project, their favourite gadget and the app that changed their life.


“My most exciting project was nothing less than a prototype for the solar industry.”

“... Not only the system, but also the product itself were newly developed – they didn’t even exist before,” says Lutz Böwe (Sales) .
He’s married, father of a daughter and has been living in his adopted home of Hamburg for more than 10 years now. He has worked in sales for KROENERT since 1 January 2017.

The buzzwords digitalization and Industry 4.0 are on everyone’s lips, and they’re key issues at KROENERT, too. What was your first encounter with the digital age?
My first digital encounter was Windows 95 and the sound of the modem. Then there were the so-called LAN parties with long lengths of cable. Even back then, I was fascinated by the idea of “working” on something together as part of a network.

All of Lutz Böwe´s answers

“Continuously finding out about the trends, opportunities and risks on the market”

Questions for Bianca Schulze, Commodity Manager at KROENERT and Hamburg resident by choice since October 2018.
“Being close to the water to pursue my hobby of kitesurfing makes Hamburg the perfect home for me. I've spent a lot of the last few years abroad – in India, the US and Spain, for instance – so I’m excited to meet people from other cultures and learn from them.”

All of Bianca Schulze´s answers


“The machines go on a journey – and we go with them. You get to see the world. I found that exciting right from the word go!”

Jens Vollpott is also a salesman through and through: in a video interview, the current Regional Sales Director tells us what else is important to him and what attracted him to KROENERT. (in GERMAN only - we are sorry!)


“Why the production of prepregs was my most exciting project!” Interview with Markus Plocher, Head of Service

“Why was my most exciting project the production of prepregs – in other words reinforcing fibres (mostly fabrics) that are already pre-impregnated with resin and can be used in a whole range of areas, from aviation to the automotive industry? As the salesperson responsible, I was first able to sell the machine and then implement the mechanical design as the technical project manager. Today, I take care of the service for this machine with my team. In this way I got to know the entire cycle of a machine at KROENERT.”


All of Markus Plocher’s answers


Mechanical engineering studies in Aleppo, scholarship through the Schotstek, process engineer at KROENERT

My name is Zaki Nemeh. I was born in Aleppo/Syria in 1988. I studied mechanical engineering at the University of Aleppo – specialising in materials science. At the same time, I was able to do my master’s degree at the Institute of Technology in Damascus. I had to leave my home country at the end of 2015 and I started a new life in Hamburg.

How did you hear about KROENERT?
As a newcomer in Hamburg, I was looking for contacts and networks. I was lucky enough to be able to get a scholarship under the Schotstek programme. (...)

All of Zaki Nemeh’s answers


“Driving innovation and exploring possibilities of Industry 4.0!”

Questions for Ralf Mohrdieck, Head of Electrical Engineering
I’m 50 years old and happily married. My wife and I have two girls aged 18 and 20.

What did you do before KROENERT?
I started at Hartmann & Braun AG (formerly Mannesmann Group), developing process control systems. I then worked for 20 years at Nordson Engineering GmbH in Lüneburg, latterly as head of product development for hotmelt systems.

All of Ralf Mohrdieck’s answers




Regina Reuscher, Director of Projects at COATEMA

How did you hear about COATEMA?
It was through my professor at Niederrhein University of Applied Sciences.

What do you think makes a good employee in your field of work?
Committed, motivated, able to work independently, flexible.

All of Regina Reuscher’s answers



Dimitrios Kourkoulos, native of Cologne, chemist and R&D Project Manager in the research department at COATEMA.

What did you do before you started working at ZAE?
I studied chemistry in Cologne and then did my doctorate in physical chemistry. After that, I worked as a project manager at a research centre for organic and printed electronics. There I was responsible for the coordination and handling of publicly funded projects.

How did you hear about COATEMA?
By word of mouth – a colleague already knew COATEMA from a research project. Otherwise, as a chemist, it would probably never have occurred to me to apply to a mechanical engineering company ...

All of Dr Dimitrios Kourkoulos’ answers


Motivated by coffee and full of vigour: Havva Celik, Project Manager at COATEMA

What keeps you going on a day-to-day basis?

What was your most exciting project?
COATEMA in all its facets.

All of Havva Celik’s answers



“The construction of a renewable energy plant in Asia was my most exciting project to date.”

What did you do before you started working at ZAE?
Project management in special machine construction.

How did you hear about COATEMA?
Joint research projects.

All of Susana Abreu Fernandes’ answers




A fast rise through the ranks! Norman Kirst’s path from trainee to Head of Design was short and steep! Here he tells us how it all happened.

My name is Norman Kirst and I’m 30 years old. I came to Hamburg to do a degree in mechanical engineering in 2010. During my studies, I became of aware of KROENERT during an internship. Following on from this, I was also able to write my bachelor’s thesis at the company and was offered a design engineer position in spring 2014. After only a short time, I expanded my field of responsibility in the company as a technical project manager and took on this new challenge. (...)

All of Norman Kirst’s answers


“Off to the SPS with 330 pastries” – Interview with Leilah Allam, Sales Assistant at ZAE

The buzzwords digitalization and Industry 4.0 are on everyone’s lips, and they’re key issues at ZAE, too. What was your first encounter with the digital age?
A C64 with a floppy disc (it was a while ago ... :-).

What has been the most exciting project you’ve been involved in with the company to date?
One exciting project every year is the SPS trade fair in Nuremberg, where – as a traditional Hamburg company – we present our freshly baked Franzbrötchen, which are special, cinnamon-flavoured pastries: baking and distributing 330 of them in 3 days is definitely an exciting undertaking – as is all the action going on at the trade fair!

All of Leilah Allam’s answers



From ATARI to cost optimization projects in aircraft construction and Production Manager at ZAE – we interview Michael Harloff

What do you think makes a good employee in your field of work?
A good mix of different qualities and skills: professional expertise, team spirit, commitment, curiosity and a drive for optimization.

What was your most exciting project?
The launch of a Production Control Centre for monitoring and controlling the production of plastic components.

All of Michael Harloff’s answers


Hobby musician, hobby pilot and engineer at ZAE – interview with Lukas Näfken

Hobby musician? That’s fascinating! Do you play in a band? What style of music?
Oh, we’re a party band – we play everything that goes down well at parties. The best of the 70s, 80s, 90s and today, if you like.

Great! Those sound like fun evenings! What did you do before you started working at ZAE?
Before joining ZAE, I studied mechanical engineering with a focus on product development. I did my bachelor's degree in Hamburg and my master’s in Baden-Württemberg. I was already employed as a working student and intern at ZAE during my studies. (...)

All of Lukas Näfken’s answers



“What qualities does a development engineer need to have, Mr Heitmann?”

In our field, initiative, the ability to work in a team and creativity in solving problems are particularly in demand. A good understanding of technology and the ability to learn quickly are of course other requirements you meet to be successful with us.

What did you do before you started working at ZAE?
I studied mechanical engineering at RWTH Aachen University. I’ve been working in the development department at ZAE since 2018.

How did you become aware of ZAE?
I found ZAE the usual way through an internet search and then I applied here on my own initiative.

All of Niklas Heitmann’s answers




“Give someone a smile and you’ll get one back.”

Melanie Rehberg gives an equally friendly welcome to every visitor and staff member. Allow us to introduce her:

My name is Melanie Rehberg, 27 years old. Although I’m not a native of Hamburg, I’ve always felt drawn to this beautiful Hanseatic city – because of work, friends, restaurants, concerts, musicals, the proximity to the North Sea and much more.

What did you do before you started working at ATH?
Unlike most people, I don’t come from an industrial background. In fact I trained as a hotel manager and gained a further six years of experience in the field before joining the ATH team on 1 July 2019.

What keeps you going on a day-to-day basis?
Give someone a smile and you’ll get one back. It’s this small gesture that keeps me motivated every day to sit at work with a smile and give my best.

All of Melanie Rehberg’s answers




Your career with the ATH Group

The companies of ATH Altonaer-Technologie-Holding are very international in their orientation: As a skilled specialist, you can look forward to a job in a cutting-edge technology sector that offers lots of opportunities to make an active contribution.

Longstanding experience

It's the healthy mix of experience and fresh ideas that defines our team. Our high level of technology cutting-edge facilities and international customer base guarantee an exciting working environment.


The companies of ATH Altonaer-Technologie-Holding are very international in their orientation: as world market leaders in the field of coating technology, the companies count numerous well-known corporations among their customers as well as specialist niche suppliers. ZAE gear units are an integral part of the some of the most state-of-the-art machinery in the world.

Further development

Our goal is continuous development Your chances of advancement in the company are excellent because we attach great importance to personnel development.

Family business and foundation

ATH Holding is owned by two foundations. Profits are reinvested or donated to cancer research. This creates the basis for innovation.