The beijing ruilan united communications equipment company ( formerly a canadian company ) signed recently a contract with the china satellite communications group on construction of the 3 . 5ghz land fixed wireless access system in nanjing 日前，北京瑞澜联合通信设备有限公司（原加拿大运通通信公司，以下简称“瑞澜公司” ）与中国卫星通信集团（以下简称“卫星集团” ）签订了南京3 5ghz地面固定无线接入系统工程合同。
