| 2012 | 2013 | ||||||
| Cost of revenues | $ | 13,551,240 | $ | 14,666,041 | |||
| Research and development expenses | 604,223 | 470,681 | |||||
| Sales and marketing expenses | 172,189 | 132,312 | |||||
| General and administrative expenses | 3,316,192 | 3,034,542 | |||||
| $ | 17,643,844 | $ | 18,303,576 |
| 2012 | 2013 | ||||||
| Buildings | $ | 115,034,342 | $ | 152,128,751 | |||
| Machinery and equipment | 168,947,314 | 125,617,004 | |||||
| Office equipment | 2,624,137 | 2,520,480 | |||||
| Motor vehicles | 1,486,337 | 1,722,492 | |||||
| 288,092,130 | 281,988,727 | ||||||
| Accumulated depreciation | (102,766,292 | ) | (123,715,978 | ) | |||
| Construction in progress | 51,714,066 | 11,321,396 | |||||
| Prepayment for acquisition of property, plant and equipment | 1,717,991 | 558,013 | |||||
| Carrying amount | $ | 238,757,895 | $ | 170,152,158 |
| Year ending September 30, | |||
| 2014 | $ | 3,809,156 | |
| 2015 | 3,809,156 | ||
| 2016 | 3,777,192 | ||
| 2017 | 3,514,923 | ||
| 2018 | 3,067,519 | ||
| Later years | 9,367 | ||
| $ | 17,987,313 |
| Buildings | $ | 32,718,634 |