The SPD brand series of rollers mainly consists of more than 40 types of five series, including trough idler, rubber disc idler, spiral idler and impact idler etc. Cover ports, mining, power, cement, metallurgy, paper and other industries. While satisfying the production needs of its own construction and Rizhao Port, it has been long-term supplying domestic and foreign customers such as Longteng Special Steel, Shanghai Zhenhua, Inner Mongolia Zhahaer Coal Company, ThyssenKrupp, TAKRAF, etc. Exported to the United States, Australia, Japan, France etc. 23 countries. In 2014, it was awarded the Excellent Supplier Award by US customers.