 In order to overcome with refueling issue, using two UAVs and switching them out when one reaches its 10-hour limit so that they can be used for 24 hours consecutively.The practicality of the ASN-209 system reduces the needs for maintenance or parts from China, as ASN-209 can be deployed using a modified truck and is controlled using electronics equipment installed in a cargo van, which in turn overcomes the disadvantage of comparable US UAVs that depend on US parts and maintenance.The ASN-209 was developed in 2011 by ASN Technology Group, which is a Chinese company specialized in Unmanned Aerial Vehicle (UAV).