Universal Resource & Services Ltd. is an investment holding company. It provides petro-engineering services to the oil and gas industries. It operates through following segments: Rental of Oil-Drilling Equipment; Oil Well Maintenance; and Corporate. The Rental of Oil-Drilling Equipment segment is the business of leasing oil-drilling equipment to third parties through SKY Petroleum Technology Development (Tianjin) Co., Ltd. The Oil Well Maintenance segment provides technical maintenance services on oil wells through Song Yuan Tian Yuan Oil Exploration Technology Service Co., Ltd. The Corporate segment is involved in group-level corporate services and treasury function. The company was founded by Qing Zeng Liu on August 8, 1995 and is headquartered in Singapore.