WANG & LEE GROUP, Inc., through its subsidiary, operates as a construction contractor in Hong Kong and Mainland China. It engages in the contract engineering, installation, and out-fitting activities for low voltage electrical systems, mechanical ventilation and air-conditioning systems, fire safety systems, and water supply and sewage disposal systems for the public and private sectors. The company also offers fire services, which includes fire prevention, detection, suppression and extinguishing systems, and plumbing and drainage systems. It serves small startups and large companies, as well as private individuals, offices, factories, shopping malls, hotels, hospitals, schools and educational institutes, theme parks, construction companies, and property developers, as well as the HK SAR government.