Deyi Holdings Limited is an investment holding company mainly engaged in providing repair, maintenance, alteration and addition services. Repair, maintenance, alteration and addition services include general maintenance, rehabilitation and optimization of existing facilities and building components and their surroundings. The company also procures materials for customers and, if necessary, engages subcontractors to assist in the projects and to ensure that subcontractors can carry out such works in accordance with contract specifications and customer requirements. In addition, the company provides building construction services. Building construction services mainly include building works and civil engineering works for new buildings such as lift buildings, football pitch walkways, such as site clearance, site formation, piling, structural works, muddy water works, installation of doors, windows and floor tiles, and site co-ordination for new buildings such as elevator buildings, football pitches and footpaths.