| Revenue | 31/12/2018 | 31/12/2017 | 31/12/2016 | 31/12/2015 |
| Total revenue | 2,665,400 | 1,616,100 | 1,993,900 | 1,932,100 |
| Cost of revenue | 1,429,400 | 621,500 | 923,000 | 841,400 |
| Gross profit | 1,236,000 | 994,600 | 1,070,900 | 1,090,700 |
| Operating expenses |
| Research development | - | - | - | - |
| Selling general and administrative | 174,300 | 135,700 | 112,000 | 106,900 |
| Non-recurring | - | - | - | - |
| Others | -27,600 | -17,000 | -11,700 | -10,000 |
| Total operating expenses | 1,576,100 | 740,200 | 1,023,300 | 938,300 |
| Operating income or loss | 1,089,300 | 875,900 | 970,600 | 993,800 |
| Income from continuing operations |
| Total other income/expenses net | 1,581,900 | 4,902,800 | 2,541,300 | 1,149,100 |
| Earnings before interest and taxes | 1,089,300 | 875,900 | 970,600 | 993,800 |
| Interest expense | -165,900 | -103,900 | -97,000 | -100,400 |
| Income before tax | 2,671,200 | 5,778,700 | 3,511,900 | 2,142,900 |
| Income tax expense | 214,100 | 153,100 | 167,300 | 137,200 |
| Minority interest | 28,000 | 34,700 | 20,000 | 35,400 |
| Net income from continuing ops | 2,457,100 | 5,625,600 | 3,344,600 | 2,005,700 |
| Non-recurring events |
| Discontinued operations | - | - | - | - |
| Extraordinary items | - | - | - | - |
| Effect of accounting changes | - | - | - | - |
| Other items | - | - | - | - |
| Net income |
| Net income | 2,457,100 | 5,613,900 | 3,346,300 | 2,011,700 |
| Preferred stock and other adjustments | - | - | - | - |
| Net income applicable to common shares | 2,457,100 | 5,613,900 | 3,346,300 | 2,011,700 |