Kerui Petroleum is a comprehensive industrial group integrating high-end petroleum equipment research, development and manufacture, oilfield engineering technological service, and oilfield EPC turnkey contracting. Kerui Petroleum is the largest manufacturer and service provider of oil and gas equipments in China. The Group now has more than 8000 employees, is headquartered in Dongying City, where the second largest oilfield of China — Shengli Oilfield is located.