At the end of August, 2018, Phuong Trang Ha Noi Commerce and Tourism Ltd. Co. and Sixei Ltd. Co. have signed a contract to build the wastewater treatment plant for Phuong Trang Ha Noi hotel.
The capacity of the plant is 60 m3/day. Effluent will meet the National Technical Regulation on Domestic Wastewater 14:2008/BTNMT, column B.
