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1874 – At age 16, Calixto Romero Hernández, the eldest son of a rural Spanish family, leaves Spain in order to try his hand at trade in Central America and the Caribbean.
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1888 – Lured by the commercial movement in Catacaos, Calixto moves to Peru with his business partner and friend Manuel Torres. The two soon launch a straw hats company.
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1893 – Calixto Romero Hernández forays into a new business, exporting leather made from goat and cattle hide.
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Between 1896 and 1915 – Calixto Romero Hernández’s company grows and takes shape, diversifying its investments by expanding its businesses both nationally and internationally.
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1897 – Calixto Romero Hernández places an order for a cotton gin from Fred Probst Inc. Co. in New York, marking his foray in the cotton business.
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1902 – Calixto Romero Hernández purchases shares in Banco Italiano (since 1942, Banco de Crédito del Perú).
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1913 – Calixto Romero Hernández acquires the San Jacinto farming estate.
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1917 – Calixto Romero Hernández retires and returns to Spain. Feliciano del Campo Romero, Dionisio Romero Iturrospe and María Francisca Romero de Onrubia assume the helm of the company (second generation).
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1927 – The first wave of farming estate purchases begins in Piura.
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1928 – C. Romero y Cía is founded. The plant produces oils, soaps, and lards, operates as a refinery and removes seeds from cotton fibers.
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1929 – La Inmobiliaria S.A. (LISA) is incorporated (since 1986, Inversiones Centenario).
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1943 – El Pacífico Compañía de Seguros y Reaseguros is incorporated (since 1992, El Pacífico Peruano Suiza Compañía de Seguros y Reaseguros S.A.).
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1944 – Bolivia Industrias del Aceite S.A. (FINO) is founded.
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1949 – The second wave of farming estate purchases begins.
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1950 – Almacenes Romero is incorporated (since 1978, Interamérica de Comercio S.A.; since 2004, Plaza del Sol).
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1951 – Banco Continental is founded.
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1952 – Universal Textil is incorporated (since 1989, Compañía Universal Textil).
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1959 – Consorcio Naviero Peruano is created.
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1964 – ALMA PERÚ is incorporated.
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1965 – Dionisio Romero Seminario, José Antonio Onrubia Romero, Calixto Romero Seminario and Manuel Romero Seminario take over leadership of the Romero Group (third generation).
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1971 – The conglomerate Anderson Clayton & Co. S.A. is acquired: Industrias Anderson, Clayton & Co. S.A. (founded in 1956) , since 1971, Compañía Industrial Perú Pacífico; since 1995, Consorcio de Alimentos Fabril Pacífico S.A.; since 1997, Alicorp S.A.; and since 2002, Alicorp S.A.A. In addition, Reprensa Algodonera y Almacén Nacional S.A. is also acquired (since 1939, Ransa). Lastly, Fábrica de Aceites Shapaja S.A., Agencias Ransa S.A. and Compañía Almacenera S.A. were also acquired.
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1972 – Industrial Textil Piura S.A. is founded.
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1976 – Corporación General de Servicios S.A. (Cogesa) is incorporated.
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1979 – Palmas del Espino S.A. is incorporated.
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1980 – Aero Transporte S.A. (ATSA) is founded.
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1982 – The Calixto Romero Hernández Foundation is founded.
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1985 – Orus S.A. is incorporated.
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1987 – Vidal & Vidal S.A. is acquired (since 1992, Witt S.A.)
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1990 – Trabajos Marítimos S.A. (Tramarsa) is created.
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1992 – Industrias del Espino S.A. is incorporated.
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1993 – AFP Unión is incorporated.
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1993 – Samtronics Perú S.A. is created.
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1997 – Romero Trading S.A. is incorporated as a result of the merger with the Peruvian company Industrias y Servicios de la Selva Industria S.A.
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1998 – Multimercados Zonales S.A. (Minka) is incorporated.
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1999 – Terminal Internacional del Sur (Tisur) is incorporated and obtains a concession to operate the Matarani Port.
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2001 – Dionisio Romero Paoletti, Luis Romero Belismelis and José Antonio Onrubia Holder assume the helm of the Romero Group (fourth generation).
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2004 – Romero Trading partners with ENAP (Chile) to purchase Shell Peru service stations. The company changes its name to Distribuidora Petrox (since 2005, Primax S.A.).
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2005 – Prima AFP is incorporated.
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2005 – The telecommunications company Sitel S.A. is acquired.
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2006 – A 30% stake in Ambev Perú is acquired.
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2006 – Biogas and biofuel projects are consolidated.
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2006 – Agrícola del Chira S.A. is incorporated.
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2007 – The acquisition of Digital Way, a wireless broadband telecommunications provider, is completed.
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2008 – Alicorp acquires the Argentinean company The Value Brand Company (TVB). In Ecuador, the company forms a strategic alliance with the Alarcón Group for the exclusive distribution of its products. In Columbia, Alicorp acquires Propersa, a manufacturer and distributor of personal hygiene products. Central American operations are strengthened by launching a new product, balanced shrimp feed.