Lai Si Enterprise Holding Limited, an investment holding company, undertakes fitting-out, alteration, and addition works projects in Macau and Hong Kong. It also undertakes construction, and repair and maintenance works. In addition, the company offers mechanical and electrical engineering services, as well as holds an office building. It primarily serves hotel and casino developers and owners, international retailers, and restaurant owners; landowners and the Macau government; and operators of hotels and casinos, retail shops, and restaurants.