11. Cash and cash equivalents
|
|
Dec 31, 2017 |
|
Dec 31, 2016 |
|
|
|
US $ |
|
US $ |
|
Cash at bank |
|
22,651,475 |
|
21,829,632 |
|
|
|
|
|
|
|
|
|
22,651,475 |
|
21,829,632 |
|
|
|
|
|
|
|