GRUPO DYASA, a Mexican corporate group with more than 25 years of experience, is dedicated mainly to the Foundry, Oil & Energy Industries. It covers both domestic and international markets. Companies part of the Dyasa Group include: Cronyng. Resins and related product for the Oil and Foundry. Dyasa. Products for the Foundry Industry Materias Primas Dyasa. Raw and coated sands, Proppants Dyasa Ambiental. Environmental solutions. For more information about the companies and products, please write us: servicioaclientes@grupodyasa.com