China All Nation International Holdings Group Limited, an investment holding company founded in 2014 and headquartered in Wanchai, Hong Kong, operates across Hong Kong and the People's Republic of China. The company delivers a broad spectrum of services, including civil engineering consulting and contracting, project management, and interior design and decoration. Its operations are structured into several key segments: Contracting, Interior Design and Decoration Work, Property Sub-Leasing and Management Service, and Commodity Trading. In the realm of civil engineering, the company provides expertise in structural and geotechnical engineering design, coupled with comprehensive site supervision for both private and public sector development projects. It also undertakes design-and-build projects, particularly focusing on the foundational and geotechnical elements of various construction and civil engineering endeavors. Furthermore, the firm offers specialized technical advisory services for planning design submissions and overseeing site activities. It supports foundation and geotechnical contractors by coordinating work schedules and streamlining the logistical management of personnel, materials, machinery, and other vital site resources. Beyond these core engineering and design activities, the company also extends administrative and management services, engages in the sub-leasing of office premises, and participates in commodity trading. The company, previously known as KSL Holdings Limited, adopted its current name in March 2019.