SEL provides all-in-one swimming pool services: lifeguarding and plantroom repair and maintenance work. SEL’ s swimming pool management team is very experienced. In the past 5 years, the team has been providing services for various government departments and is the on-list contractor of Hong Kong Housing Society, ISS Facility Services Limited, Citybase Property Management Limited, Goodwell Property Management Limited, Nan Fung Group and Hong Yip Service Company Limited.