Tangerang City Waterproofing Project Tangerang City Jl. Cikokol - Tangerang - Indonesia Completion Date Product Volume 2011 HPI System 6,015 m3 Area Completed : Basement, Podium, Roof & Swimming Pool, all Slab & Retaining Wall, STP/GWT Architect PT. Airmas Asri Engineer PT. Gistama Intisemesta Contractor PT. Pembangunan Perumahan Developer/Owner PT. Trivo Group