| Revenue | 31/12/2018 | 31/12/2017 | 31/12/2016 | 31/12/2015 |
| Total revenue | 50,982,000 | 53,715,000 | 52,713,000 | 53,272,000 |
| Cost of revenue | 28,769,000 | 30,547,000 | 30,229,000 | 30,808,000 |
| Gross profit | 22,213,000 | 23,168,000 | 22,484,000 | 22,464,000 |
| Operating expenses |
| Research development | 900,000 | 900,000 | 978,000 | 1,005,000 |
| Selling general and administrative | 8,803,000 | 13,507,000 | 13,799,000 | 14,065,000 |
| Non-recurring | - | - | - | - |
| Others | 41,427,000 | 44,031,000 | 44,031,000 | 44,031,000 |
| Total operating expenses | 38,472,000 | 44,954,000 | 45,006,000 | 45,878,000 |
| Operating income or loss | 12,510,000 | 8,761,000 | 7,707,000 | 7,394,000 |
| Income from continuing operations |
| Total other income/expenses net | -127,000 | -608,000 | -238,000 | -174,000 |
| Earnings before interest and taxes | 12,510,000 | 8,761,000 | 7,707,000 | 7,394,000 |
| Interest expense | -627,000 | -608,000 | -572,000 | -552,000 |
| Income before tax | 12,383,000 | 8,153,000 | 7,469,000 | 7,220,000 |
| Income tax expense | 2,575,000 | 1,667,000 | 1,922,000 | 1,961,000 |
| Minority interest | 720,000 | 758,000 | 626,000 | 643,000 |
| Net income from continuing ops | 9,808,000 | 6,486,000 | 5,547,000 | 5,259,000 |
| Non-recurring events |
| Discontinued operations | - | - | - | - |
| Extraordinary items | - | - | - | - |
| Effect of accounting changes | - | - | - | - |
| Other items | - | - | - | - |
| Net income |
| Net income | 9,389,000 | 6,053,000 | 5,184,000 | 4,909,000 |
| Preferred stock and other adjustments | - | - | - | - |
| Net income applicable to common shares | 9,389,000 | 6,053,000 | 5,184,000 | 4,909,000 |