The headquarters of shandong wals, located in the strange city of jenan, capital of shandong province, is the marketing centre established by walls, germany, on the basis of china's wisdom, to collect lubricating oil and liquids; and to develop, develop, produce and market high-tech enterprises. Planning is under way for the establishment of a vols brand sales network and a chain of automobile conservation centres. The objective is to meet today's strong lubricants market and future energy needs. Research and development and production cover a wide range of lubricants products such as automobiles, engineering machinery, generators, ships, industrial equipment, metallurgy, machine manufacturing, etc. Products are fully compliant with international standards for quality levels and performance certification. The vols brand mainly produces car oil, diesel oil, hydraulic fluids, car gear oil, brake fluid, lubricant, anti-freeze fluids, oils for various types of mechanical equipment, car assistive maintenance, etc. The product has won recognition and positive feedback from a wide range of agents and consumers in terms of quality。