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Shandong Lingong Construction Machinery (SDLG), first established in 1972, is a leading international manufacturer of construction machinery, and the national-level high-tech company. SDLG produces more than 100 kinds of products in three categories, namely, loaders, excavators and pavement construction machinery. Its pillar products are rated as China Famous-brand Product and Famous Trademark of China. SDLG has received many honorary titles including China’s Top 100 Enterprises in Machinery Industry, Leading Enterprise in the Industry, Credible and Reputed Enterprise, Single-item Champion Demo Company in Manufacturing Industry, National Labor Medal, Governor Quality Prize, National Quality Award in Machinery Industry, National Quality Prize, Asia Quality Excellence Prize,EFQM Global Excellence Award and National Quality Benchmark Company, etc.
SDLG, maintaining sound partnership with leading universities and research institutes in China, has established the open and efficient system for technological cooperation and innovation. It has established the national-level technical center and Post Ph.D. work station. It undertakes a few R&D tasks in China’s 863 Program and those above the provincial level, obtaining more than 290 national patents.

Caterpillar Inc. owns a complex portfolio of brands whose roles and relationships support the growth to achieve our enterprise goals. The Caterpillar brand is used in communication to represent our corporation with the investment community, employees, public policy makers, and other key stakeholders. The Caterpillar brand is the umbrella that shelters all other brands in the portfolio.

Shandong Star agricultural equipment co., ltd. Located in Leling Economic and Technological Development Zone, Dezhou City, Shandong Province,China. It is a national high-tech enterprise, a "specialized and new" enterprise in Shandong province, and a "gazelle" enterprise in Shandong province. The registered brands of agricultural equipment are "STAR" and "TRANSCE". It specializes in the research, development, production and sales of mechanized equipment for potato production. it has developed more than 80 kinds of mechanized equipment for potato production in 7 series, including "cultivation, planting, management, harvesting, conveying, storage and tracking". the product quality and sales volume are among the best in china. among them, 19 products have passed the provincial agricultural machinery promotion and appraisal, and are sold well all over the country and more than 20 countries and regions including Eastern Europe, Oceania, South America, Central Asia, Middle East and Africa.
The company has established long-term cooperative relations with well-known domestic scientific research institutes such as the national potato engineering and technology research center, china agricultural university, Shandong university of technology, and Shandong agricultural machinery Science research institute, and has cooperated to establish an enterprise graduate workstation. among them, the graduate workstation jointly built with Shandong university of technology was rated as a demonstration base for joint training of graduate students integrating industry and education by the Shandong provincial Department of education. in addition, the company has established research and development platforms such as the Shandong provincial academician workstation, Shandong provincial postdoctoral innovation and practice Base, Dezhou intelligent agricultural equipment technology innovation center, Dezhou "one enterprise one technology" R&D center, Dezhou potato (potato, Sweet potato) intelligent agricultural equipment Key laboratory, and Dezhou engineering research center for potato intelligent equipment. it has strong scientific and technological research and achievement transformation capabilities, and provides technical support and services for the industry's key technology research and development and industrialization demonstration.

SENNEBOGEN was founded in 1952 to develop and produce machines for the agricultural industry. The company has now established itself as a full service provider and quality leader in crane technology and material handling.
As an international company, SENNEBOGEN develops and produces complete model ranges for duty cycle cranes, crawler cranes, telescopic and harbour cranes, material handlers, telehandlers as well as base carriers. In addition to flexible machines from series production, SENNEBOGEN also designs individual specialized machines in close collaboration with its clients