發送短信 : Production planning with flexible customization using a branch-price-cut method

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