Cemex - Worldwide producer of cement, ready-mix concrete and aggregates. Includes product and solution information, news and links to related sites. Dragas y Excavaciones - Heavy machinery rental, including excavators, cranes, and draglines. Also does excavations and site preparation. Provides photos and specifications of equipment. Impamerica SA de CV - Chihuahua-based company which designs and manufactures stone products, including cantera, travertine, marble, and cast stone. Describes products, finishes, and shipping requirements. [English/Spanish] Petremex - Specialists in marine dredging and the production of aggregate, gravel and sand. [English/Spanish] Grupo Garza Ponce - Construction company building and planning projects for urbanization, industrial parks, office buildings, and commercial centers. Mexico Solar - Offers design, installation, and maintenance of solar energy home heating and water heating devices. Constructora Quimica Industrial - An independent company dedicated to providing engineering and manufacturing services for process equipment in the chemical, petrochemical, food and related industries. Riho - Manufacturer of gypsum ceiling tiles.