發送短信 : Optimization of cleaning process for castings

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