Ocean Sky International Ltd is an investment holding company engages in civil engineering, construction, and related services businesses primarily in Singapore and Cambodia. It operates through Construction segment, and Real estate segment. The Construction segment which contributes majority revenue involves in the business of building and civil engineering contractors. The real estate and investment property segment is in the business of leasing of properties and development of properties. The company offers engineering services, such as earthwork, roadwork, drainage work, basement work, and structural works comprising demolition and underground infrastructure works, as well as other general building works.