Home About Service News & Projects Contact Excellent performance with minimum downtime Accurate and highest professional standards Strong and experienced team Jln.Tanjung Buntung 2 Perum komplek Tanjung Buntung Baru no.2 Open Hours: Mon - Fri: 8 am - 5 pm info@gemasarana.com (0778) 7893149 0822 8378 8540 2023 © Gema Sarana Teknik. All rights reserved. Developer Wmn.co.id