發送短信 : Factors influencing the rate of diffusion of innovative products.

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