2019 INDOWATER ጃካርት። 2018 INDOWATER 2018 INDOWATER 2017 ጀርመን 2017 ኢንዶኔዥያ ሱራባያ 2019 INDOWATER ጃካርት። WETEX 2018 2017 ቻይና ሻንጋይ ውሃ
