Gas Conversion  Manufacturers, Traders, Suppliers

Any superstructure...
... is based on a chassis. However, it is the carefully fitted body that turns the chassis into a transport vehicle for multiple applications, protecting and carrying heavy loads.
Carl Friederichs provides made-to-measure special-purpose bodies - for cash-in-transit and valuables transport, guard containers, universal information vehicles, service, van and platform bodies or mini-busses for passenger transport. Our flexibility, specific know-how and close cooperation with our clients help us address your special needs and individual demands.
We take on responsibility. From the very beginning. From quotation over the entire manufacturing process to the handover of the finished vehicle: there is one dedicated team for each order.
Based in Frankfurt but at home around the world ? our special vehicles protect people, cash-in-transit and valuables on all continents. Individual vehicles or complete fleets ? we deliver worldwide.
Just contact us. We are looking forward to building your vehicle!

Trade with service and tradition
For more than 50 years, alga in Sittensen has specialized in buying and selling new and used trucks, trailers, construction machinery and buses.
On a total storage area of approx. 150,000 m² we keep approx. 1,200 - 1,700 vehicle units ready for you at any time. A 9,000 m² multi-purpose hall houses our showroom for new and used buses from many well-known manufacturers.
Decades of experience!
We support your investments with our wide range of vehicles and services.
alga workshop (TBS) - with spare parts distribution worldwide
Comprehensive customer service has always been a special feature of alga. After all, you only earn money with your vehicle when it is ready for use. You can have your vehicle repaired, serviced or converted in our independent, non-brand-affiliated master workshop. From A as in exhaust emission test to Z as in accessory sales, we offer you everything here from a single source.
alga tire center - tire sales for trade and private customers
In our tire center you can get the right tires - for every vehicle or for every manufacturer. As a tire wholesaler with our own tire warehouse, we keep well-known brands in stock in almost all dimensions. From large wheel loader tires to winter tires for your private car - you can get everything from us! If you wish, we can also mount your tires directly in our tire workshop.
alga services
Sale, purchase, leasing, financing, long-term rental. Customer wishes always have right of way with us!
alga - your partner all along the line - directly at the freeway A1 - Hamburg - Bremen

ATG Alternative Technology Group GmbH, based in Glött (Dillingen district, Bavaria), was founded in 1985 by Franz Eisenhofer Sr. and has been managed by Franz Eisenhofer Jr. since 2000.
Our many years of know-how in conjunction with experienced partners from Germany and abroad form an extensive network of specialists for alternative fuel and energy systems, which is bundled under the umbrella of ATG.
ATG's range of services covers the following main areas:
- Development, production and sales of multifuel generators for power generation with alternative fuels
- Development, manufacture and sale of vegetable oil conversion systems for operating diesel engines with alternative fuels
- Development, manufacture and sale of diesel fuel preheaters to prevent cold problems in winter
- Sales of special diesel accessories such as fuel tanks, fuel pumps, fuel hoses, etc.
- Worldwide installation and training service for ATG products and systems
- Project planning and operation of renewable energy systems for power generation from sun, water and wind
Detailed information on our product portfolio can be found on our website.