J.M. de Jong Groep B.V. is a family owned company based in Sliedrecht, The Netherlands. Established at the end of the 19th century by J.M. de Jong sr. [a black-smith] in the town of Alblasserdam. The second generation developed this company further into a job-shop during the 30's. During he fifties the 3rd generation again expanded the company's activities. The company has two main activities: * Design, development and manufacturing of OCS & vending machines. [de Jong DUKE] * sub-contractor and co-maker for the metal industry. [de Jong TECHNICS]