Chinney Alliance Group Limited, an investment holding company, primarily provides building related contracting services for public and private sectors. It operates through six segments: Plastic and Chemical Products, Building Related Contracting Services, Foundation Piling and Ground Investigation, Building Construction, Aviation, and Others. The company offers building related contracting services, including engineering contracting services in the air-conditioning industry and maintenance services; foundation piling, and drilling and site investigation services; and superstructure construction work services, as well as imports, markets, and distributes plastic and chemical products.

It is also involved in the distribution and installation of aviation systems and other hi-tech products, as well as mechanical, electrical, and building supplies; property holding and development business; contracting of building aluminum works; treasury functions; trading of electrical, air-conditioning, and other building supply products; and maintenance of air-conditioning, electrical generators, water pumps, and fire prevention and fighting systems. In addition, the company trades in building decoration materials, generators, and electrical and mechanical engineering materials and equipment. Further, it is involved in the basement construction works; agency trading of industrial products; equipment and machinery leasing; construction material testing; design, installation, repair, and maintenance of electrical and mechanical systems; trading of electrical installation products; provision of management services; installation of heat ventilation and air-conditioning systems; and manufacturing of cable containment and air duct products.

The company operates in Hong Kong, Mainland China, and Macau.