發送短信 : Industrial sludge as construction material

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