CHRYSO concrete admixtures and grinding aids For over 60 years, CHRYSO has put its chemical expertise at the service of the construction and Civil Engineering professionals around the world. The admixtures and additives for concrete, cement and gypsum which CHRYSO designs and manufactures, improve the usage value of these construction materials. A subsidiary of the MATERIS group, CHRYSO is a major world player and leader in its markets in France. With over 380 employees, CHRYSO is at your service from some 20 sites around the world, due to its international network of subsidiaries and distributors. CHRYSO , a leader in innovation Always looking to be more innovative, CHRYSO significantly invests in Research and Development. As a result, many products are marketed each year and patents are filed regularly. CHRYSO has developed scientific partnerships with university programs and public bodies, and works closely with customers on technological innovation programs. Its International Research centre is supported by local assistance and formulation laboratories in its subsidiaries. Moreover, our application laboratories are dedicated to the evaluation of product performance and “custom” formulations. Furthermore, our plants in Sermaises and around the world are equipped with modern industrial tools, for the production of new generation polymers and formulated products.