Volwa Group Co., Ltd. is a joint-stock enterprise, which is made up of five subsidiary companies:Shandong Volwa Construction Machinery Co., Ltd., Shandong DorsonHydraulic Co., Ltd., Shandong Volwa Tube Co., Ltd., Shandong Volwa Logistics Co., Ltd. and Jining Jinsheng Coal-Mining Co., Ltd. Shandong Volwa Construction Machinery Co., Ltd. is located in Rencheng Economy Development Zone of Jining, Shandong Province, which is a high-tech enterprise in accordance with modern enterprise standards.The company, which is invested of 325 millionyuan, covers 237 acres, has more than 80, 000 square meters modern plants, contains more than 8, 000 square meters research center and comprehensive office building. It is a professional hydraulic excavator manufacturer integrating R&D, manufacturing and sales. And it has three modern industry-leading assembly lines. The products are suitable for working in all kinds of complicated operation conditions, widely used in construction, 　industrial, agricultural and military fields and well known by their high efficiency and high reliability. So far, the products researched and developed by the company independently including: DLS860-7 with Blade wheel type, DLS860-7A with blade four drive wheel type, DLS895-7Awith blade two drive wheel type, DLS865-7B crawler type, DLS130-7 crawlen type and DLS150-7 crawler type othen series of multi-function hydraulic excavators. More than 5, 000 excavators are manufactured every year. The products have won the customer€™s favour since launched in the market. DL S35-7 wheel type, DLS85-7 wheel type, DLS860-7 crawler type and other series of multi-function hydraulic excavators are being developed, and will be put into production recently.The company persists in the combination of technological progress and scientific management, implements pithily talent development strategy, establishes the high standard of technical research and development centers. Korean GTS Machinery Institute provides a stro