On September, 2018, Lan Anh Ltd. Co. and Sixei Ltd. Co. have signed a contract agreement. According to that agreement, Sixei Ltd. Co. is to build a wastewater treatment plant for Nha Trang City Central building, which is located at 29 Phan Chu Trinh st., Van Thanh ward, Nha Trang city.
The capacity of the plant is 300 m3/day. Effluent will meet the National Technical Regulation on Domestic Wastewater 14:2008/BTNMT, column B.