Move .wsp files from one server to another server farm

1.Copy the .wsp file from old server Visual studio project debug folder .
2.Paste the .wsp into the new sever (like "C:\backup\file.wsp").
3.Open the "SharePoint 2010 Management shell" Run as Administrator mode.
4.Use the following code.

    Deploy Event Receiver and Master page as farm solutions
     Add-SPSolution -LiteralPath "C:\backup\file.wsp"
      Install-SPSolution -Identity file.wsp –GACDeployment


    Deploy Visual Webpart:
    Add-SPSolution -LiteralPath "C:\backup\file.wsp"
     Install-SPSolution -Identity file.wsp -WebApplication http://serverurl –GACDeployment

  Deploy Sandbox solutions. 
Add-SPUserSolution -LiteralPath  C:\backup\file.wsp  -Site  http://serverurl /sites/name
Install-SPUserSolution -Identity  file.wsp  -Site http://serverurl /sites/name

 
 Note:http://serverurl ----> http://servername ex:(http://Sharepoint)