Energy International Investments Limited 

As an investment holding company, Unity Enterprise Holdings Limited functions as a contractor specializing in repair, maintenance, alteration, and addition (RMAA) works throughout Hong Kong. The firm's core repair and maintenance offerings involve the comprehensive upkeep, restoration, and enhancement of existing buildings and facilities. These services range from re-roofing, external and internal wall refurbishment, floor screeding and retiling, and spalling remediation, to scaffolding, the repair and replacement of windows and doors, plastering, painting, improvements to fire safety systems, and plumbing and drainage solutions. Additionally, the company provides supplementary services, including modifications and extensions to building layouts and structural elements, the design of new structural components, evaluations of the structural integrity of existing constructions, and interior decoration for current premises. Established in 1999, Unity Enterprise Holdings Limited maintains its headquarters in Kwun Tong, Hong Kong.