Tenax, a producer of speciality chemicals, completed the acquisition of NEST, a specialist in diamond tools for quartz processing. Financial terms were not disclosed. "The Nicolai family strongly believes in this project, to the extent that they have made a significant reinvestment in Tenax. This partnership with Tenax will enable NEST to take a new and important step forward, adapting to the current dynamics of the global market, thus becoming even more comprehensive and competitive," Alessandro Nicolai, NEST CEO.