1. The document advertises the ROP-PFW pre-fabricated wall system patented by Ricardo Palma in 2011 for constructing houses, row houses, townhouses, and condominiums more quickly and at lower cost than traditional methods. 2. The system uses locally available materials and does not require a factory, special equipment, or highly skilled labor. Wall panels are constructed on-site and allow for maximized space utilization. 3. ROP Construction Inc. was founded in 1980 and has used the ROP-PFW system to construct mass housing developments in several Philippine regions. The system and company have been approved and accredited by various government agencies.