• 

  Thermo Westronics

• 

  The Technical Material Corporation

• 

  Thetford

• 

  Tyco Thermal Controls

• 

  Unitherm Cemcon

• 

  Universal Thermosensors Ltd

• 

  Vibra Schultheis

• 

  Walther Flender

• 

  Walther Sheid

• 

  Walther Systemtechnik