The West Extension Project of Songze Elevated Road starts from Cao Ying Road in the west and ends at the toll station east of G15 Interchange of Songze Elevated Road in the east, with a total length of about 18 kilometers, and the project is located in the north of Railway Traffic Line 17.

The west extension of Songze Elevated Road is the supplement and improvement of Shanghai's backbone road network, and is the main westward channel of Hongqiao Business District, which enhances the external radiation capacity of Hongqiao Business District and strengthens the flexibility of the organization of Hongqiao Business District's external traffic in multiple directions, and is the fast channel between Qingpu New City and the downtown of Shanghai, and is the fast channel between the clusters of the western area of Shanghai (Jiaqing, Songhong and Rainbow), and is the travel channel to the tourist area of Suzhou's Jiangnan Ancient Water Town, and the tourist corridor of Dianshan Lake Scenic Spot.

XinXinJie testing bear the project steel structure testing part, testing project including welding process evaluation, welding material testing, raw material testing (tensile, bending, impact, chemical analysis), factory and on-site weld flaw detection.