Gulf Industrial Services Company - Gisco: Commercial Agencies Representation of Companies, Building General Maintenance, Central Air Conditioning System Maintenance, Installing And Repairing Fire Resistant Filtering Systems, Sanitary Equipment Installation And Repairing, On-shore, Off-shore Oil & Gas Field & Installation Services, General Contracting, Installing & Laying And Repairing Alarm Systems, Sewerage Project Contracting-Sewerage Treatment Plant, Installing And Repaining Cooling System And Air Conditioning Contracting Works, Mechanical ...