Dah Chong Hong Industrial Machinery Co. Ltd. (DIM) specializes in the development of industrial machinery and generators in Hong Kong, endeavoring to provide advanced and high quality products as well as professional and comprehensive sales and aftersales service for its customers.

DIM's customer base ranges from governmental departments, public utilities, to private organizations and companies, e.g. Electrical & Mechanical Service Department of HKSAR Government, Hong Kong Housing Authority, CLP Power Hong Kong Ltd., PCCW and Mandarin Oriental Hotel.