• 

  Linatex

• 

  Magnatrol

• 

  MG DUFF INTERNATIONAL LTD

• 

  MKTTn Mueller Kauffman Tetrathionate Novobiocin

• 

  MMC International Corporation

• 

  M-M International

• 

  Natel Engineering

• 

  National

• 

  National Carbon

• 

  NATIONAL FACTORY