| Revenue | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 |
| Total Revenue | 58,610,000 | 41,999,000 | 25,704,000 | 21,753,000 |
| Cost of Revenue | 45,519,000 | 32,388,000 | 17,718,000 | 14,433,000 |
| Gross Profit | 13,091,000 | 9,611,000 | 7,986,000 | 7,320,000 |
| Operating Expenses |
| Research Development | - | - | - | - |
| Selling General and Administrative | 104,000 | 95,000 | 92,000 | 106,000 |
| Non Recurring | - | - | - | - |
| Others | - | 246,000 | 99,000 | 99,000 |
| Total Operating Expenses | 48,725,000 | 34,828,000 | 19,929,000 | 16,234,000 |
| Operating Income or Loss | 9,885,000 | 7,171,000 | 5,775,000 | 5,519,000 |
| Income from Continuing Operations |
| Total Other Income/Expenses Net | -2,645,000 | -2,007,000 | -2,782,000 | -654,000 |
| Earnings Before Interest and Taxes | 9,885,000 | 7,171,000 | 5,775,000 | 5,519,000 |
| Interest Expense | -4,854,000 | -3,608,000 | -3,233,000 | -2,820,000 |
| Income Before Tax | 7,240,000 | 5,164,000 | 2,993,000 | 4,865,000 |
| Income Tax Expense | -248,000 | 613,000 | -345,000 | 196,000 |
| Minority Interest | 67,335,000 | 51,628,000 | 43,235,000 | 31,920,000 |
| Net Income From Continuing Ops | 7,488,000 | 4,551,000 | 3,338,000 | 4,669,000 |
| Non-recurring Events |
| Discontinued Operations | - | - | - | - |
| Extraordinary Items | - | - | - | - |
| Effect Of Accounting Changes | - | - | - | - |
| Other Items | - | - | - | - |
| Net Income |
| Net Income | 3,584,000 | 1,462,000 | 1,651,000 | 2,341,000 |
| Preferred Stock And Other Adjustments | - | - | - | - |
| Net Income Applicable To Common Shares | 3,328,000 | 1,317,000 | 1,518,000 | 2,207,000 |