The company GS Stolpen GmbH & CO.KG industrial components and project-related equipment for commercial kitchens, dining expenses, laboratories and food processing are produced.

In the business industry component parts and assemblies are manufactured in small and medium quantities of stainless steel and aluminum as supplies for the final producer.

In the business industry component parts and assemblies are manufactured in small and medium quantities of stainless steel and aluminum as supplies for the final producer. The company no structural steel is processed.

Three dimensions to edit the competence components in the design, the certificate for the welding of railway vehicles and vehicle parts, as well as the in-depth knowledge of the processing of stainless steel and aluminum are the basis for our long-standing relationships with companies in the rail equipment, automated production, the manufacture of heat exchangers, resources the automotive industry and producers of equipment for food processing.

Furthermore, we manufacture laser cutting and bending parts, welded assemblies, housing parts, lockers, small refrigeration components, transport containers, drawers and trolley.

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.

Innovative concepts in machining
Services in CNC turning and milling, turning shop, assembly of complex components and devices, taking over complete outsourcing projects



The GTMB metal part production GmbH is your technical partner when it comes to machining operations, assembly of complex assemblies and equipment or relocation of production.



Through our technical expertise and flexibility, we manufacture according to your individual requirements on modern machine technology sophisticated CNC milling and turning parts in small to medium series.

These are our many years of experience in the machining of copper materials, high-strength materials and delicate products made of cast aluminum.



In quality management, we are consistently focused on the needs of the international markets of our customers.



The GTMB may be your problem solver for the production of sophisticated CNC milled parts and turned parts as well as the assembly of mechanical components and devices.



Our strengths:



Ability of simultaneous engineering


Constructive advice before the manufacturing stage


Professionalism in work preparation


Care in the production


Technical process safety by certified processes


Logistic fine-tune your rhythm production

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.

in the GTS ter Schmitten GmbH & Co. KG.

Since 1988 we have been operating successfully as a service company in the commercial kitchen industry.

Also, our range of machining technology has been represented for years as an established supplier to companies trying various sectors in the market.

On our website we want to give you an insight into our performance catalog.

We are a forward-looking medium-sized company
the metalworking industry.

Our absolute and uncompromising precision is very much in demand.

Your competent partner in the field:

Turning - Milling - Grinding

Whether item or series production, we deliver the highest precision. Find out about our manufacturing capabilities, we can also solve your intended Zerspanungsproblem.

The company Günter Becker is in Osterode am Harz for over 30 years.
Until the early 70s, the main business focused on the development and production of automatic wire bending machines for electronic components such as resistors and transistors.

After introduction of semiconductor technology made the switch to using pure contract manufacturing in the field of turning, milling and grinding.
In this segment, we were not able to establish ourselves in the last southern Harz region through our quality work and numerous attract customers. For our customers today include well-known companies from all industries, including medical, aviation and aerospace technology, automotive industry.

We would be happy if we may this also includes you soon!

Services ...

Our range of services includes:

• Item and serial production
• Processing of customer parts according to drawing or sample
• procurement of materials with test certificate
• Installation of smaller assemblies
• Delegate of third party services, such as heat and surface treatment, to competent partners
• CAD Drafting according to DIN
• Final inspection


We process almost all materials such as:

• aluminum alloys
• Steel
• Rust-and acid-resistant steels
• Titanium alloys
• Plastics
• Chrome-nickel alloys
• and much more ...

Supplier of precision machined parts (individual parts and small series) according to customer drawings for medical technology, precision engineering and optical industry, laboratory, and laser industry

Processed materials: aluminum, steel V2A, plastics, non-ferrous metals

Tolerances and surfaces:
Flatness to 0.003 mm;
Ra> 0.04;

Machining tolerances
+ / -0.01 Mm;

Complete processing including surface treatment such as zBElox (also decorative with no visible machining marks), nickel plating, gold plating ...

Laser engraving in copper and other materials
CNC 3-coordinate measuring technique
Data transfer

We also manufacture using the latest technology components to customer specifications.

- Diameter up to 20mm
- Knurling, threading, reaming, drilling, slotting
- Cross-processing by-driven tools possible
- Especially stainless steels such as 1.4021, 1.4034, 1.4301, 1.4305, 1.4310
- Processing of materials such as brass, silver, bronze, plastic, cutting steel
- Production of small modules possible (assembly, pressing, Laserscheweißen)
- Individual labeling with Article no. possible by laser technology
- 5-axis milling machine for post processing of complex components, as well as for pure Fräsfertigung
- Item manufacturing possible up to series production of up to 30,000 pieces.

Precision turned parts to customer specifications. Possibilities are rolling smallest diameters up to complex machining with thread and smooth surfaces.

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.

We are a company that manufactures plastic injection molded parts. We manufacture with more than 20 years experience plastic parts according to customer wishes.

With our integrated tooling we manufacture according to technical drawings for patterns or tools with minimal cost. We have 16 injection machines with a Einpritzvolumen for plastic from 1 gr to 6075 gr and a Schliesskrafft 80-800 tons

Year of establishment: 1984

Registered office: Bursa (Turkey)

Built-up area: 2000 m2

Number of Employees: 35

Certification: ISO / TS 16949: 2002 and ISO 9001: ISO 9001: 2000

In addition to our production of plastic goods we satisfy with merchandise on the subject of technical rubber parts all your needs - in best quality!