發送短信 : Determinants and Management of Make-and-Buy

            ______    _____     ______    _____   
  ____     /_   _//  /  ___||  /_   _//  / ____|| 
 |    \\    -| ||-  | // __     -| ||-  / //---`' 
 | [] ||    _| ||_  | \\_\ ||   _| ||_  \ \\___   
 |  __//   /_____//  \____//   /_____//  \_____|| 
 |_|`-`    `-----`    `---`    `-----`    `----`  
 `-`