Solis Holdings Ltd. is an investment holding company, which engages in the design and construction of mechanical and electrical engineering. The company employs 195 full-time employees The company went IPO on 2017-12-11. The firm designs and builds mechanical and electrical (M&E) engineering systems in Singapore. Its services comprise the designing of M&E systems, which involves the design for functionality and connectivity of various building systems, and the building and installation of these M&E systems. The firm specializes in electrical engineering, and its projects relate to new building developments and key additions and alterations (A&A) works, which include private residential, mixed residential, commercial developments, and institutional buildings. The installation of M&E systems includes key systems related to electrical-based systems such as lighting, switchgear, and generators; communication and security systems such as CCTV and card access systems; and telephone cabling systems. Its subcontracted M&E works include the installation of air-conditioning systems.