Most planes flown in China are manufactured by Boeing or Airbus. For information about the relative safety of Chinese airlines, an independent evaluation is available at the Aviation Safety Network. Imperial Tours prioritizes its itineraries with the main national airlines operating within China, namely Air China, China Eastern, China Southern and Hainan Airlines or their subdiaries. All Chinese airlines are governed by strict safety standards enforced by CAAC, the government’s airline authority. When due to limited flight options such as between secondary destinations, Occasionally, Imperial Tours is forced to use a regional or minor airline.