Hamm AG
Hamm one of the leading manufacturers of compactors. Tandem rollers, vibrating compactors and static rollers for soil and earth compaction. Made in Germany.
http://www.hammag.com/

Lithoroll Corporation
Specialists in rubber to metal bonding and rubber compounding. Economical design assistance. Low and high volume manufacturing. Over 1,000 rollers stocked used primarily in the printing industry. We provide rubber mixing, molding, autoclaving, grinding, as well as a full C-N-C machine shop.
http://www.lithoroll.com

Love Bike
Makes tandem bicycles and tandem bike child parent, and tandem mountain bikes. USA.
http://www.lovebike.com

International Tandem Network
eTandem Europa is a project funded by the European Commission as part of the European Year of Languages 2001. eTandem Europa's objective is to introduce as many European citizens as possible to the opportunity of learning a foreign language with eTandem and to make it easy for these language learners to get started.
http://www.slf.ruhr-uni-bochum.de/etandem/etindex-de.html

Hypac Compaction Equipment
Manufacturer and distributor of compaction equipment including single drum and tandem vibratory, static steel wheel and pneumatic rollers.
http://www.hypac.com/

Bomag Compaction Equipment
Worldwide manufacturer and distributor of compaction equipment including single drum, tandem, static, pneumatic rollers, refuse, recyclers and stabilizers .
http://www.bomag.com

Fastrax Conveyors & Components
Fastrax is a well-established conveyor roller manufacturer producing a comprehensive range of conveyor rollers for a wide range of industries
http://www.fastraxcc.com

T-AX-O GmbH
Tandem-Tieflader für das Baugewerbe; Tandem-Anhänger mit Pritschen-, Schiebeplanen- und Kofferaufbau für das Transportgewerbe. [D-08412 Werdau]
http://www.t-ax-o.biz/

Hase Bikes
Firma Hase ist Hersteller der Liegedreiräder Kettwiesel und Lepus, Langlieger Tagun, Stufentandems (Pino) und Kindertrailer (Trets). Company Hase Spezialräder is the producer of the trikes (Kettwiesel and Lepus), recumbent bike (Tagun) and the tandem (Pino).
http://www.hasebikes.com

Tandem Server Bochum
Neben der Unterstützung des Sprachenlernens im Tandem werden auch Tandempartner für alle Sprachen kostenlos vermittelt. Auch für Klassen und Gruppen.
http://www.slf.ruhr-uni-bochum.de/bochum-deu.html