Tien Sang Mechanical Casting Company Limited
Xóm 10, Thị trấn Lâm, y Yen District
Tan Loc Mechanical Casting Company Limited
Xóm 1, thôn Tống Xá, Xã Yên Xá, y Yen District
Lien Doan Brass Casting Company Limited
Ô M20, Cụm công nghiệp, Thị trấn Lâm, y Yen District
Xóm 4, Tống Xá, Xã Yên Xá, y Yen District
Thanh Tam Brass Foundry Company Limited
Đường 38B, Thôn Tống Xá, Xã Yên Xá, y Yen District
Reftec Innovative Technology Company Limited
Đường 12, Xã Yên Phong, y Yen District