| Revenue | 12/31/2018 | 12/31/2017 | 12/31/2016 | 12/31/2015 |
| Total Revenue | - | 10,086,510 | 8,678,157 | 7,864,252 |
| Cost of Revenue | - | 8,570,424 | 7,376,842 | 6,688,618 |
| Gross Profit | - | 1,516,086 | 1,301,315 | 1,175,634 |
| Operating Expenses |
| Research Development | - | - | - | - |
| Selling General and Administrative | - | 1,043,725 | 898,590 | 792,879 |
| Non Recurring | - | - | - | - |
| Others | - | - | - | - |
| Total Operating Expenses | - | 9,671,871 | 8,324,801 | 7,523,097 |
| Operating Income or Loss | - | 414,639 | 353,356 | 341,155 |
| Income from Continuing Operations |
| Total Other Income/Expenses Net | - | -67,570 | -69,833 | -78,451 |
| Earnings Before Interest and Taxes | - | 414,639 | 353,356 | 341,155 |
| Interest Expense | - | -74,112 | -48,738 | -39,025 |
| Income Before Tax | - | 347,069 | 283,523 | 262,704 |
| Income Tax Expense | - | 101,852 | 86,465 | 79,705 |
| Minority Interest | - | - | - | - |
| Net Income From Continuing Ops | - | 245,217 | 197,058 | 182,999 |
| Non-recurring Events |
| Discontinued Operations | - | - | - | - |
| Extraordinary Items | - | - | - | - |
| Effect Of Accounting Changes | - | - | - | - |
| Other Items | - | - | - | - |
| Net Income |
| Net Income | - | 245,217 | 197,058 | 182,999 |
| Preferred Stock And Other Adjustments | - | - | - | - |
| Net Income Applicable To Common Shares | - | 245,217 | 197,058 | 182,999 |