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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) | Common Stock | Treasury Stock | Additional Paid-In Capital | Retained Earnings Unappropriated | Retained Earnings Appropriated | Cumulative Translation Adjustment | Total
--- | --- | --- | --- | --- | --- | --- | ---
Begning Balance, Amount at Dec. 31, 2015 | $ 23,139 | $ (599,441) | $ 94,124,065 | $ 215,286,395 | $ 20,340,436 | $ 8,936,281 | $ 338,110,875
Begning Balance, Number of shares issued at Dec. 31, 2015 | 46,276,269 |  |  |  |  |  |
Begning Balance, Number of shares outstanding at Dec. 31, 2015 | 46,007,120 |  |  |  |  |  |
Begning Balance, Number of shares treasury stock at Dec. 31, 2015 | 269,149 |  |  |  |  |  |
Translation adjustment |  |  |  |  |  | (24,930,808) | (24,930,808)
Common stock issued, Shares | 10,000 | (10,000) |  |  |  |  |
Common stock issued, Amount |  | $ 22,300 | (7,300) |  |  |  | 15,000
Cashless exercise of stock options, Amount | $ 386 |  | (386) |  |  |  |
Cashless exercise of stock options, Number of shares issued | 776,671 |  |  |  |  |  |
Cashless exercise of stock options, Number of shares outstanding | 776,671 |  |  |  |  |  |
Issuance of stock options to employees and directors |  |  | 40,300 |  |  |  | 40,300
Net income for year ended |  |  |  | 36,225,831 |  |  | 36,225,831
Transfer to statutory common reserve fund |  |  |  | (2,570,530) | 2,570,530 |  |
Ending Balance, Amount at Dec. 31, 2016 | $ 23,525 | $ (577,141) | 94,156,679 | 248,941,696 | 22,910,966 | (15,994,527) | 349,461,198
Ending Balance, Number of shares issued at Dec. 31, 2016 | 47,052,940 |  |  |  |  |  |
Ending Balance, Number of shares outstanding at Dec. 31, 2016 | 46,793,791 |  |  |  |  |  |
Ending Balance, Number of shares treasury stock at Dec. 31, 2016 | 259,149 |  |  |  |  |  |
Translation adjustment |  |  |  |  |  | 24,157,485 | 24,157,485
Common stock issued, Shares | 10,000 | (10,000) |  |  |  |  |
Common stock issued, Amount |  | $ 22,271 | (4,471) |  |  |  | 17,800
Issuance of stock options to employees and directors |  |  | 372,400 |  |  |  | 372,400
Net income for year ended |  |  |  | 7,953,313 |  |  | 7,953,313
Transfer to statutory common reserve fund |  |  |  | (1,322,578) | 1,322,578 |  |
Ending Balance, Amount at Dec. 31, 2017 | $ 23,525 | $ (554,870) | $ 94,524,608 | $ 255,572,431 | $ 24,233,544 | $ 8,162,958 | $ 381,962,196
Ending Balance, Number of shares issued at Dec. 31, 2017 | 47,052,940 |  |  |  |  |  |
Ending Balance, Number of shares outstanding at Dec. 31, 2017 | 46,803,791 |  |  |  |  |  |
Ending Balance, Number of shares treasury stock at Dec. 31, 2017 | 249,149 |  |  |  |  |  |

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