Petro-king Oilfield Services Ltd is an investment holding company principally engaged in the provision of oilfield technology services covering various stages in the life cycle of oilfields including drilling and production enhancement as well as consultancy services for oilfields and gas fields. The Company is also engaged in activities in the trading of oilfield and gas field related products. The Company mainly conducts its businesses through two segments, including Oilfield Project Tools and Services segment and Consultancy Services segment. The Consultancy Services segment mainly engages in the provision of integrated project management services and supervisory services. The Company mainly conducts its businesses within domestic market.