Huong Tra Enviroment Company Limited
Tổ 9, Phường Tân Lập, Thai Nguyen City
Quang Trung Environmental Company Limited
Tổ 37, Phường Quang Trung, Thai Nguyen City
Thai Nguyen Sewerage and Urban Infrastructure Development One Member Limited Company
Tổ 10, Phường Tân Thịnh, Thai Nguyen City
Truc Linh Environmental Company Limited
Tổ 9, Phường Tân Lập, Thai Nguyen City