Zishan Engineers (Pvt.) Ltd. (ZEL) is a Pakistani engineering consultancy incorporated in 1981. In addition to Pakistan, ZEL has invested in Nigeria.ZEL provides services to the oil and gas, petrochemicals, water, power generation, and various other industrial sectors. Their major clientele include companies in these sectors in Pakistan, and certain foreign companies in Nigeria, USA, Saudi Arabia, Oman, UAE, Malaysia and Bangladesh.