| Revenue | 12/31/2018 | 12/31/2017 | 12/31/2016 | 12/31/2015 |
| Total Revenue | 9,379,000 | 8,358,000 | 7,518,000 | 8,139,000 |
| Cost of Revenue | 7,354,000 | 6,546,000 | 5,992,000 | 6,405,000 |
| Gross Profit | 2,025,000 | 1,812,000 | 1,526,000 | 1,734,000 |
| Operating Expenses |
| Research Development | 152,000 | 138,000 | 137,000 | 143,000 |
| Selling General and Administrative | 807,000 | 791,000 | 759,000 | 791,000 |
| Non Recurring | - | - | - | - |
| Others | 29,000 | -11,000 | 12,000 | -10,000 |
| Total Operating Expenses | 8,344,000 | 7,464,000 | 6,896,000 | 7,329,000 |
| Operating Income or Loss | 1,035,000 | 894,000 | 622,000 | 810,000 |
| Income from Continuing Operations |
| Total Other Income/Expenses Net | -93,000 | -247,000 | -148,000 | -322,000 |
| Earnings Before Interest and Taxes | 1,035,000 | 894,000 | 622,000 | 810,000 |
| Interest Expense | -115,000 | -165,000 | -203,000 | -205,000 |
| Income Before Tax | 942,000 | 647,000 | 474,000 | 488,000 |
| Income Tax Expense | 97,000 | 64,000 | 109,000 | 60,000 |
| Minority Interest | 229,000 | 751,000 | 180,000 | 187,000 |
| Net Income From Continuing Ops | 845,000 | 583,000 | 365,000 | 428,000 |
| Non-recurring Events |
| Discontinued Operations | -195,000 | 158,000 | -8,000 | -302,000 |
| Extraordinary Items | - | - | - | - |
| Effect Of Accounting Changes | - | - | - | - |
| Other Items | - | - | - | - |
| Net Income |
| Net Income | 337,000 | 636,000 | 326,000 | 93,000 |
| Preferred Stock And Other Adjustments | - | - | - | - |
| Net Income Applicable To Common Shares | 337,000 | 636,000 | 326,000 | 93,000 |