What are the listed companies in Yiyuan Garden?

Shandong Yao Bo, Luyang Energy Saving, Ruifeng High Material. Under the listing effect of Shandong Yaobo, six listed companies, including Luyang Energy Saving Company and Ruifeng Gaocai Company, once gathered in this county town, forming a "Yiyuan phenomenon" that attracted worldwide attention. Yiyuan County belongs to Zibo City, Shandong Province, and is located in the middle of Shandong Province. It was built in 1944 with a total area of 1636 square kilometers.