HDB toilet flush replacement關於「Toilet flush system」標籤，搜尋引擎有相關的訊息討論：
GL-230P - TYH Marketing Pte Ltdtyh.com.sg › ... › Flush Valves › Urinal Flush ValvesGL-400-03 - TYH Marketing Pte Ltdtyh.com.sg › ... › Flush Valves › WC Flush ValvesSiphonic & Washdown: Get to know these flushing systems!www.binawarehouse.com › single-post › 2019/06/17 › s