Vietnam International Water Treatment Exhibition Kev kho dej phwj hauv tsev cog-Liding Scavenger Shines ntawm 10th National B&B Conference Liding lub chaw kho dej khib nyiab hauv tsev ntawm WETEX 2024 Indo Dej Expo & Lub Rooj Sib Tham 2024 2024 Russia ECWATECH & WASTECH 2024 Beijing-Tianjin-Hebei Green Development Conference 10th Singapore International Water Week SIWW Thai Water Expo & Entech Pollutec Asia 2024 THW Cov neeg siv khoom Philippine tuaj xyuas lub Hoobkas Sri Lankan Cov Neeg Siv Khoom Mus Saib Liding lub hauv paus chaw haujlwm Cov neeg siv khoom African mus saib Liding's Wastewater Treatment Project Site