de C.V., known as Cemex, is a Mexican multinational building materials company headquartered in San Pedro, near Monterrey, Nuevo León, Mexico.

[5] The company's world headquarters are in San Pedro Garza García, a city that is part of the Monterrey metropolitan area in the northeastern Mexican state of Nuevo León.

In 1976, the company went public on the Mexican stock exchange, and that same year, became the largest cement producer in Mexico with the purchase of three plants from Cementos Guadalajara.

In 1997–1999, the company expanded its scope to include Asia and Africa, making major purchases in the Philippines, Indonesia and Egypt, as well as Costa Rica.

Seven months later, on April 10, 2007, the Rinker board of directors approved an upgraded offer of USD 14.2 billion, and on June 7, 2007, CEMEX secured the commitment from the holders of more than 50% of the shares to complete the acquisition.

Shortly after the apparent finalization of the Rinker deal in 2007, the United States Department of Justice brought an antitrust lawsuit against CEMEX, blocking the acquisition.

[13] After a lengthy process, CEMEX complied with regulators by divesting (selling) 40+ cement and concrete plants formerly part of itself or Rinker, essentially devaluing the initial deal.

Also, CEMEX has created the Centro CEMEX-Tecnológico de Monterrey, which is a research and development program for sustainable communities across Mexico thru the Premio CEMEX-TEC.

CEMEX and its network provide the products needed but also the technical assistance, including an architect who helps design homes to optimize space and reduce waste.

To date, more than 150,000 Mexican families have realized their dreams of home ownership [30] As of 2020, CEMEX Social Responsibility initiatives had benefited over 23 million people in its neighboring communities world-wide.

[33] The United States Environmental Protection Agency has also filed suit against CEMEX in Victorville, California, claiming the company failed to install modern air pollution controls, despite spending millions in renovations.

[36] In the United Kingdom, CEMEX was originally fined £400,000 in October 2006 after hazardous dust was deposited up to three miles (5 km) away from its Rugby works.

[38] In April 2007, CEMEX announced that it had installed a £6.5 million dust abatement system at the same works in Rugby, which had cut particulate emissions by 80%.

[39] In 2021 CEMEX announced investments in Europe to promote an environmentally-friendly “circular economy,” safely using waste as a substitute for fossil fuels, including in its Rugby plant.

According to Ed Kendig, the executive director of the Monterey Bay Unified Air Pollution Control District, it's "highly possible" that Chromium VI continues to be produced across the country as an accidental, previously unknown byproduct of the cement-making process.

The California Coastal Commission in March 2016 issued a cease and desist order asking for "administration civil penalties", stating that "the operation is narrowing beaches and impacting environmentally sensitive habitat."

[44] In 2020 CEMEX announced a new climate action strategy, aiming to lower its overall carbon footprint by 35% in 2030 compared to a 1990 baseline, and to deliver net zero concrete by 2050.