Panamanian cement company Cementos Panamáas has invested US$20m in the last five years to improve customer service and production, newspaper Panamáméica reported.  Investment entailed improvement works on the company’s production line, such as its additives furnace and information systems, and also included construction of an electric substation and a bulk cargo terminal.  In 2004, Cementos Panamá produced 500,000t, representing about half of the country’s total cement consumption.  The company is a subsidiary of Corporació INCEM whose principal shareholders are Holcim and Colombian group Cementos del Caribe.  Panamanian investors hold a one per cent stake in the company.