Ozone Laundry Facilities not only achieves saving in energy and time, but also performs sterilization and uses less chemicals (such as washing powder). Service centres with such ozone laundry facilities installed include TWGHs Fong Shu Chuen Social Service Building , TWGHs Wong Cho Tong Social Service Building , and TWGHs Women's Welfare Club Western District Hong Kong Residential Care Home for the Elderly.