OTB thinks outside the box. Operating as a holding company, OTB develops and manufactures in-line production equipment for high-tech applications. Its OTB Engineering unit develops equipment to meet specific product- production processes, enabling efficient mass production. The equipment is used in range of industries, from producing contact lens to car glazing. OTB Printing/PixDro drives research and development, and manufacture of industrial inkjet printing systems. In April 2010 the group sold its subsidiary OTB Solar to Roth & Rau for €5.5 million ($7 million), and a 6% stake in Roth & Rau valued at €30 million ($39 million). Based in the Netherlands, OTB offers sales and service in the US, India, and Asia.