When did Shandong Road and Bridge Construction Group Co., Ltd. become a contract worker?

65438+ 10 month in 2023. According to official website of Shandong Road and Bridge Construction Group Co., Ltd., it was learned that Shandong Road and Bridge Construction Group Co., Ltd. became a contractor in June 2023. Expressway is the main expressway network in China and an important part of expressway network in China.