Unless you can find them already in the library or in a 3rd party Eagle or Kicad library, you cannot "import" such symbols: you will have to create them yourself. Please read: [https://easyeda.com/forum/topic/How-to-ask-for-help-and-get-an-answer-71b17a40d15442349eaecbfae083e46a](https://easyeda.com/forum/topic/How-to-ask-for-help-and-get-an-answer-71b17a40d15442349eaecbfae083e46a) In particular the sections on Schematic Library and PCB Library in (1) in (2) in the above will describe how to create Schematic Symbols and PCB Footprints. (2.3) in (2) in the above goes into more detail about how to find and create symbols and footprints.