One of the Hong Kong leading consultants in architecture, engineering, surveying, IT and GIS. The firm was established in Hong Kong in 1989 as a joint venture company between David S.K. Au & Associates Ltd. and the international consulting engineering company Posford Haskoning Ltd. and specializes in the development and maintenance of a large variety of building developments, IT and database systems for many government departments, utilities companies, and private developers including

-Architectural Services Department; -Buildings Department; -Civil Engineering Department; -Drainage Services Department; -Environmental Protection Department; -Geotechnical Engineering Office; -Hong Kong Housing Authority; -Highways Department; -Lands Department; -Marine Department; -Planning Department; -Water Supplies Department; -Ocean Park Corporation; -Hong Kong Science and Technology Parks Corporation; -MTR Corporation; -The Hong Kong Polytechnic University; -CLP Power Hong Kong Limited; -Gammon Construction Limited; -Maxim's Caterers Limited; -Television Broadcasts Limited; -Asia Television Ltd.