| Revenue | 3/31/2019 | 3/31/2018 | 3/31/2017 | 3/31/2016 |
| Total Revenue | 826,750,000 | 705,220,000 | 10,208,000 | 9,501,000 |
| Cost of Revenue | 551,700,000 | 461,490,000 | 6,591,000 | 6,059,000 |
| Gross Profit | 275,050,000 | 243,730,000 | 3,617,000 | 3,442,000 |
| Operating Expenses |
| Research Development | - | - | - | - |
| Selling General and Administrative | 53,020,000 | 43,600,000 | 1,097,000 | 1,040,000 |
| Non Recurring | - | - | - | - |
| Others | 13,120,000 | 10,020,000 | 10,020,000 | 10,020,000 |
| Total Operating Expenses | 637,950,000 | 533,740,000 | 7,688,000 | 7,099,000 |
| Operating Income or Loss | 188,800,000 | 171,480,000 | 2,520,000 | 2,402,000 |
| Income from Continuing Operations |
| Total Other Income/Expenses Net | 21,610,000 | 31,220,000 | 454,000 | 449,000 |
| Earnings Before Interest and Taxes | 188,800,000 | 171,480,000 | 2,520,000 | 2,402,000 |
| Interest Expense | - | - | - | - |
| Income Before Tax | 210,410,000 | 202,700,000 | 2,974,000 | 2,851,000 |
| Income Tax Expense | 56,310,000 | 42,410,000 | 834,000 | 799,000 |
| Minority Interest | 580,000 | 10,000 | 10,000 | 10,000 |
| Net Income From Continuing Ops | 154,100,000 | 160,290,000 | 2,140,000 | 2,052,000 |
| Non-recurring Events |
| Discontinued Operations | - | - | - | - |
| Extraordinary Items | - | - | - | - |
| Effect Of Accounting Changes | - | - | - | - |
| Other Items | - | - | - | - |
| Net Income |
| Net Income | 154,040,000 | 160,290,000 | 2,140,000 | 2,052,000 |
| Preferred Stock And Other Adjustments | - | - | - | - |
| Net Income Applicable To Common Shares | 154,040,000 | 160,290,000 | 2,140,000 | 2,052,000 |