About us
Having the ability to design and manufacture special-purpose machinery, attachments and equipment, GSB provides services in the fields of Foreign Trade, Energy and Defense Industry in accordance with sectoral contraction and innovative adaptation requirements.

Our products
Excavator Rotary Screen Bucket
Electro-Hydraulic Clamshell Bucket
Cement Industry
Air Transfer and Lifting Equipment
Construction Machinery Attachments
Special Design Products
Agricultural Tools
Concrete Batching Plants

Representations and Distributorships
As GSB Group, we are in active trade with the countries of Austria, Israel, India, Georgia, Azerbaijan, Russia, Libya and Iraq.

Reuse of existing and proven machine tools up to complete production systems - through conversion, automation, overhaul, maintenance and relocation.

Industrial technology, mechanical engineering

GTK-Prototype UG was founded in 2014 by Tobias Günther and initially dealt with rapid prototyping machines.

Over the years, CNC milling and turning as well as assembly and development work were added due to customer requirements.

GTK-Prototype develops and designs on behalf of customers as well as internally using the most modern CAD systems such as Solid Works, Autodesk Inventor, Fusion 360 and others and inserts them into a comprehensive CAM system.
Through the production of prototypes in medical technology, mechanical engineering and the automotive sector, GTK-Prototype was able to acquire extensive experience in manufacturing.

In 2018, the production option laser cutting was added.

GTK-Prototype is currently based in Neuhausen near Tuttlingen and will move to the newly built company location in Radolfzell in the course of 2022.

GTS Gate To Steel GmbH is a German company based in Düsseldorf. We are based in the field of mechanical and plant engineering.
Our subsidiary is located in Wuxi near Shanghai. We have been in our line of business in China since 2004. We know the market and business inside and out.

Our customers are German companies that sell industrial equipment to China.

We are not an intermediary!

GTS produces itself in its own hall.
GTS takes over the production of the local production portion in China for the customers.

We manufacture both entire assemblies and individual parts - it only depends on the needs of our customers.
Of course we can also take care of the transport to Europe and all related formalities.

We stand for:

German quality made in China
Know-how protection
Customary market prices
On-time delivery

Our highly qualified team in our own assembly hall, together with a proven network of sub-suppliers, form your extended arm in China.
Together they realize your projects in your usual German quality.

GTS offers you an all-round carefree package tailored to your requirements.

Metal construction in perfection!
Stephan Günthner and his company stand for quality, reliability and precision. In order to guarantee you the best possible result for your investment, we work with the highest quality materials such as steel, aluminum and stainless steel.

GWL is a medium-sized 3D printing service provider that, in addition to the industrial production of prototypes or series, also takes on the development or 3D printing optimization of your projects.

A brief introduction
We employ metal machinists, a shortage occupation in metal industry nowadays, who produce small series of special parts on traditional machines. In this sector CNC machines are so widely used that there is a shortage of traditional machines and excess demand exists for them. With this in mind, we will purchase several traditional machines during our current developments to increase our capacity in this field. We, of course, have CNC machines as well and develop our machine pool regularly. Based on the orders received, we are able to draw up a production program for 1 month in advance and allocate our resources. Our customers basically include producers which manufacture special purpose machines for their customers (e.g. manufacturers in printing industry, shipyards, industrial scale manufacturers, food producers, automotive industry, manufacturers of medical equipment), and we produce components needed for these machines. BAT tobacco factory is included among our customers, and we manufacture wear/consumable parts required for their daily production. We produce components and subassemblies for medical equipment manufactured by Siemens and GE factories. Besides, we supply units for robotic production lines of AUDI and VW factories.

The company had its first premises at the residence of the founders in Pécs. Production took place in a small workshop. At the beginning temporary workers were working in addition to a single permanent worker. The first orders we received involved simple processing of materials. In addition to manufacturing new products, we undertook and still undertake to carry out repair works. We undertook all works therefore outgrew the small workshop we used at the beginning, and in 2007 at Pécs-Hird we acquired our first production hall suitable for carrying out industrial activities with a floor space of approximately 250 m2. Here we were able to carry out production on a larger scale and serve more customers. Owing to our continuous progress and current developments, now the floor area of the production hall exceeds 1000 m2. Concerning work organization, our activities include manufacture and assembly of special-purpose products, machines and machine units. Therefore our machines and equipment are universal and able to satisfy all demands.