Core Insights - Shanxi Province has recently obtained a patent for a "locking mechanism for splicing steel structure bridges and its method," with the patent granted on May 2022 [1] Company Summaries - **Shanxi Provincial Transportation Engineering Quality Testing Center (Limited Company)**: Established in 2013, located in Taiyuan, with a registered capital of 100 million RMB. The company has participated in 2,402 bidding projects and holds 229 patents, along with 10 administrative licenses [1] - **Shanxi Provincial Transportation Planning and Surveying Design Institute Co., Ltd.**: Founded in 1964, also located in Taiyuan, with a registered capital of 500 million RMB. The institute has invested in 11 companies, participated in 3,694 bidding projects, holds 525 patents, and has 86 administrative licenses [1] - **Shanxi Provincial Transportation Technology Research and Development Co., Ltd.**: Established in 2018, located in Taiyuan, with a registered capital of 300 million RMB. The company has invested in 4 enterprises, participated in 1,496 bidding projects, holds 485 patents, and has 9 administrative licenses [2]