E thehiloe ka 2006, Shandong Guanxian Huiquan Traffic Facilities Co., Ltd. e fumaneha Guanxian New Century Zone Zone, Profinseng ea Shandong. Khoebo e ngolisitsoeng ka molao ea limilione tse 20 tsa CNY, e akaretsa sebaka se ka bang lisekoere tsa limithara tse 43,290. Re e 'ngoe ea likhoebo tse akaretsang tse sebetsanang le tlhahiso, thekiso ea polasetiki e chesang ea galvanized guardrail.