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SIAO is an independent Nigerian professional services firm, providing Audit & Assurance, Accounting, Tax, International Financial Reporting Standards Advisory, Human Resource, and Financial Advisory Services.

BOI House, Plot 256, Zone A
Off Herbert Macaulay Way
Behind Unity Bank Building
Central Business
District Abuja

Tel: +23492912462,
Tel: +23492912463

18b Olu Holloway Road,
(Former Temple Road),
Off Kingsway Road,
Ikoyi, Lagos.
Tel- +234(802)1810043