Nhat Long Business and Production Company Limited
Thôn Ngọc, Xã Lạc Đạo, Van Lam District
Hoa Phong Environment Joint Stock Company
Thôn Hoà Đam, Xã Hòa Phong, My Hao District
Phuc Thinh Hung Environment Company Limited
Thôn Xa Lung, Xã Phù ủng, An Thi District
Do Na Va Environment Company Limited
Thôn Hành Lạc, Thị trấn Như Quỳnh, Van Lam District