| Revenue | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 |
| Total Revenue | 8,202,000 | 7,011,300 | 6,286,400 | 5,568,700 |
| Cost of Revenue | 5,547,100 | 4,701,400 | 4,246,400 | 3,789,200 |
| Gross Profit | 2,654,900 | 2,309,900 | 2,040,000 | 1,779,500 |
| Operating Expenses |
| Research Development | 220,900 | 193,700 | 166,100 | 124,700 |
| Selling General and Administrative | 746,000 | 699,500 | 647,300 | 544,400 |
| Non Recurring | - | - | - | - |
| Others | - | - | - | - |
| Total Operating Expenses | 6,514,000 | 5,594,600 | 5,059,800 | 4,458,300 |
| Operating Income or Loss | 1,688,000 | 1,416,700 | 1,226,600 | 1,110,400 |
| Income from Continuing Operations |
| Total Other Income/Expenses Net | -99,600 | -64,300 | -85,500 | -57,600 |
| Earnings Before Interest and Taxes | 1,688,000 | 1,416,700 | 1,226,600 | 1,110,400 |
| Interest Expense | -101,700 | -92,300 | -72,600 | -68,300 |
| Income Before Tax | 1,588,400 | 1,352,400 | 1,141,100 | 1,052,800 |
| Income Tax Expense | 371,500 | 691,700 | 308,500 | 280,500 |
| Minority Interest | 47,200 | 53,600 | 48,200 | 39,900 |
| Net Income From Continuing Ops | 1,216,900 | 660,700 | 832,600 | 772,300 |
| Non-recurring Events |
| Discontinued Operations | - | - | - | - |
| Extraordinary Items | - | - | - | - |
| Effect Of Accounting Changes | - | - | - | - |
| Other Items | - | - | - | - |
| Net Income |
| Net Income | 1,205,000 | 650,500 | 822,900 | 763,500 |
| Preferred Stock And Other Adjustments | - | - | - | - |
| Net Income Applicable To Common Shares | 1,205,000 | 650,500 | 822,900 | 763,500 |