Thi\u1ebft b\u1ecb do nh\u00f3m nghi\u00ean c\u1ee9u c\u1ee7a \u0110H \u0110\u00e0 N\u1eb5ng s\u00e1ng ch\u1ebf c\u00f3 chi ph\u00ed ch\u01b0a \u0111\u1ebfn 10 tri\u1ec7u \u0111\u1ed3ng, th\u1ea5p h\u01a1n nhi\u1ec1u so v\u1edbi c\u00e1c m\u00e1y \u0111o th\u00e2n nhi\u1ec7t t\u1eeb xa tr\u00ean th\u1ecb tr\u01b0\u1eddng hi\u1ec7n nay c\u00f3 gi\u00e1 t\u1eeb 300 – 400 tri\u1ec7u \u0111\u1ed3ng.<\/em><\/strong><\/p>\n\n\n\n