QCTC About Us Qatar Construction Technique Co WLL (QCTC), an ISO9001:2015; ISO14001:2015; and ISO45001:2018, is one of the leading companies in the sector of specialized contracting services companies in the State of Qatar. QCTC has been able to become a pioneer in the specialized Sub-Contracting Category with an extensive experience in Industrial Repair, Rehabilitation and Maintenance for Publi