| Revenue | 12/31/2018 | 12/31/2017 | 12/31/2016 | 12/31/2015 |
| Total Revenue | 498,375 | 485,261 | 486,982 | 458,091 |
| Cost of Revenue | 319,831 | 323,748 | 335,702 | 302,881 |
| Gross Profit | 178,544 | 161,513 | 151,280 | 155,210 |
| Operating Expenses |
| Research Development | - | - | - | - |
| Selling General and Administrative | 118,484 | 108,192 | 101,264 | 99,963 |
| Non Recurring | - | - | - | - |
| Others | - | - | - | - |
| Total Operating Expenses | 458,743 | 451,687 | 455,204 | 421,159 |
| Operating Income or Loss | 39,632 | 33,574 | 31,778 | 36,932 |
| Income from Continuing Operations |
| Total Other Income/Expenses Net | -7,260 | -6,431 | -1,269 | -4,097 |
| Earnings Before Interest and Taxes | 39,632 | 33,574 | 31,778 | 36,932 |
| Interest Expense | -3,560 | -1,838 | -1,636 | -2,085 |
| Income Before Tax | 32,372 | 27,143 | 30,509 | 32,835 |
| Income Tax Expense | 7,813 | 8,562 | 10,050 | 9,828 |
| Minority Interest | - | - | - | - |
| Net Income From Continuing Ops | 24,559 | 18,581 | 20,459 | 23,007 |
| Non-recurring Events |
| Discontinued Operations | - | - | - | - |
| Extraordinary Items | - | - | - | - |
| Effect Of Accounting Changes | - | - | - | - |
| Other Items | - | - | - | - |
| Net Income |
| Net Income | 24,559 | 18,581 | 20,459 | 23,007 |
| Preferred Stock And Other Adjustments | - | - | - | - |
| Net Income Applicable To Common Shares | 24,559 | 18,581 | 20,459 | 23,007 |