Singson started out as a businessman owning tobacco factories manufacturing and distributing Virginia tobacco, a bus transportation company named Partas,a construction company, a radio station, an ice plant, and a tomato paste plant.
It operates a 24/7 service for passengers and freight (known as "waybill") between Metro Manila and northwest Luzon (the Ilocos corridor), with services also running to Baguio City and the Central Luzon plains (Pampanga and Nueva Ecija provinces).
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The latest terminal within Metro Manila was opened in Sampaloc district of Manila City.
Partas |