Yijia（Jining） construction machinery CO.LTD.,Ltd(STR for short) is located in High-tech Zone,Jining, which named”the hometown of Confucius and Mencius, the capital of China canal‘’.Jining is a famous construction machinery manufacturing base of China,Shantui,Komatsu Shantui,Komatsu Shandong etc and their matching manufacturers are all seated High-tech Zone of Jining. Jining High-tech Zone is a national High-tech Development Zone,west is China canal and Jining airport,north is Rizhao-Lankao high speed way,south is North Lake tourist area,east is high-speed railway station of Beijing- Shanghai , geographical location and convenient transportation with beautiful environment.