The first Peruvian-owned cement company "Compañía Peruana de Cemento Portland" was born, and with it, the Cemento Sol brand.

Cemento Andino built the Condorcocha plant in Junín, Peru, at 4,000 meters above sea level; and the Carpapata I hydroelectric plant.

Cementos Lima was created under the administration and management of Sindicato de Inversiones y Administración - SIA (50.5%) and the shareholders of Compañía Peruana de Cementos Portland (49.5%).

The Group went through the toughest stage of its history with the expropriation by the military government of Cementos Lima and Cemento Andina.

After 6 years, 51% of the shares of both companies were returned and the control of both companies was returned, although both were in very bad conditions. These were difficult times in which both companies almost went bankrupt.

SIA regained 49% of the shares and control of Cementos Lima and, consequently, the Government made a public offering on the Lima Stock Exchange (BVL).

UNICON was born as a result of the merger between COPRESA and HORMEC.

Cementos Lima tripled its clinker production capacity to 3.6 million tons, while cement production capacity increased to 4.5 million tons per year.

Cementos Lima created Asociación Atocongo, the company's social responsibility area. It is currently known as Asociación UNACEM.

Led by IASA, Cemento Andino is reprivatized. Subsequently, the company is listed on the Lima Stock Exchange

Construction of the 8 km subway conveyor belt connecting the Atocongo plant to the Conchán terminal was completed.

PROGRESOL hardware stores network is created.

Celepsa started operations of the El Platanal hydroelectric power plant (220 MW) in Cañete, Peru.

The internationalization of the Group was achieved with the start of operations of the Drake Cement plant in the USA with a capacity of 0.6 million tons for the production of clinker and 0.62 million tons of cement per year.

UNICON Peru acquires Firth, what we know today as Concremax.

UNACEM is born after the merger of Cementos Lima and Cemento Andino.

The capacity of Kiln I of the Atocongo plant was increased from 4.5 to 5.5 million tons of cement per year.

Following the acquisition of Lafarge's operations, creating UNACEM Ecuador, the business expands to 5 countries: Peru, USA, Chile, Colombia and Ecuador.

The grinding capacity at the Condorcocha plant was increased from 2.1 to 2.8 million tons of cement per year.

Marañón hydroelectric power plant, owned by Celepsa, begins operations.

Start of operations of the Carpapata III hydroelectric power plant (12.8 MW) that supplies the Condorcocha plant.

UNICON acquires Hormigonera Quito, which today is known as UNICON Ecuador.

UNICON acquires Hormigones Independencia, which today is known as UNICON Chile.

UNACEM obtains CEMPOR.

UNACEM merges with SIA, IASA and Pronto, consolidating the knowledge, strategy and specialization of these companies.

10 years of PROGRESOL, achieving a network of more than 800 hardware stores.

UNACEM enters the Dow Jones Sustainability Index.

The corporate structure for the UNACEM Group is approved through a simple reorganization.

Acquisition of UNACEM Chile.

We began this new stage with a specialized cement business in the Andean country, through UNACEM Peru. In addition, we consolidated UNACEM Corp as the holding company of the Grupo UNACEM, from which we deploy the strategy to all our subsidiaries, seeking business sustainability and maximizing value for all our stakeholders.

We consolidated our presence in the southwestern United States with the acquisition of the Tehachapi cement plant, doubling our installed clinker and cement capacity.

Through Celepsa, our business unit, we strengthened our position in the Peruvian energy sector with the acquisition of the Termochilca thermal power plant.

Launch of UNACEM North America, the new brand that consolidates Drake Cement and Tehachapi Cement operations in the United States.