SHANDONG YONGSHENG GROUP CO., LTD, founded in 1986, is a new enterprise group mainly in producing TBR tires and PCR tires, integrating the development, production and sales. The leading export products are ROCKSTONE radial tyres. The company possesses the first-class management and technical talents, sets up the perfect quality control and sales service systems, and also has the advanced manufacturing and testing equipments at domestic and international levels. The key equipment was imported from France, the United Sates and Germany. The ROCKSTONE brand radial tires have been up to the world leading level. The products are sold well at home and abroad, which are praised as economical and practical famous brand product. In 2006, the group newly set up the project of annual production of 1, 200, 000 sets of heavy-duty TBR tires, 10 million sets of PCR tires on the basis of annual output of 1.5 million sets of heavy-duty TBR are sold to America, Eurpe, Middle East, Southeast Asia, Africa and other places, being well received by customers.Depending on the perfect product quality, we passed the certification of ISO9001 Quality System, national CCC, the United States Department of Transportation(DOT), European Union ECE, Saudi Arabian SASOBGCC and Branzilian INMETRO.