2020 Aquatech China (Shanghai), CN 2019 WETEX UEA, AE WEFTEC AS 2019, AS VIETWATER 2019 (Hanoi), VN 2019 Aquatech China (Shanghai), CN VIETWATER 2018 (Hanoi), VN 2018 Aquatech China (Shanghai), CN 2018 GD Air, CN VIETWATER 2017 , VN 2017 Aquatech China (Shanghai), CN 2016 Aquatech China (Shanghai), CN
