CALABARZON is one of the regions of the Philippines. It is also designated as Region IV-A and its regional capital is Calamba City in Laguna. The region is composed of five provinces, namely: Cavite, Laguna, Batangas, Rizal, and Quezon. The region's name is an acronym of the names of these provinces.
Batong Angono Aggregates Corporation (BAAC) in June 2008 entered into an Operating Agreement with Concrete Aggregates Corporation (CAC), a mining company affiliated with real estate conglomerate Ortigas Holdings’ Incorporated whereby BAAC was granted rights to operate CAC’s quarries in Angono, Rizal for fifteen (15) years subject to the conditions indicated in the Operating Agreement as well as CAC’s Mineral Production Sharing Agreements (MPSAs) and Environmental Compliance Certificate (ECC). Batong Angono Aggregates Corporation is an associate company of Lafarge Holdings (Philippines) Inc. and Republic Cement Corporation.