Zainal Daud Sendirian Berhad is a Bumiputera Company established in 1983, ISO certified since 2014 providing Engineering, Design, Construction Commissioning and Maintenance of Electrical and Instrumentation Services in the oil and gas industry. The Company started to specialised in the Electrical and Instrumentation Engineering discipline since the early 2000s. Prior to that the Company was involved mainly in the Building and Construction Industry.