Located in Guanxian Economic Development Zone, Liaocheng City, Shandong Province, Zhangping Village North ring Road and east ring Road crossing 100 west, the legal representative is Zhang Guijie. Business scope includes general items: Transportation and public management of metal signage manufacturing; Sales of signs for transportation and public administration; Sales of metal products; Rail transit special equipment, key systems and components sales; Transportation facilities maintenance; Metal structure sales; Import and export of goods. (Except for items subject to approval according to law, independent business activities shall be carried out according to the business license) Licensed items: Construction projects. (Projects subject to approval according to law shall be approved by relevant departments before business activities can be carried out, and specific business projects shall be subject to approval documents or license certificates of relevant departments. )