Shenzhen Investment Bay Area Development Company Limited 

Shenzhen Investment Holdings Bay Area Development Company Limited (SIHBY) operates as an investment holding company, primarily involved in the development, operation, and administration of toll expressways and bridges across the People's Republic of China. Its business activities are structured around the GS Superhighway, GZ West Superhighway, and Xintang Interchange segments. Significant projects within its portfolio include the Guangzhou-Shenzhen superhighway and the Guangzhou-Zhuhai West superhighway. Beyond its core infrastructure ventures, SIHBY also participates in land development, land utilization, and offers loan financing services. Founded in 2003, the company is headquartered in Wan Chai, Hong Kong, and functions as a subsidiary of Shenzhen Investment International Capital Holdings Infrastructure Co., Ltd.