| First quarter | ||
| SEK M | 2012 | 2011 |
| Net sales | 77,034 | 69,956 |
| Cost of sales | (59,414) | (52,810) |
| Gross income | 17,620 | 17,146 |
| Gross margin, % | 22.9 | 24.5 |
| Research and development expenses | (3,708) | (3,309) |
| Selling expenses | (6,489) | (5,982) |
| Administrative expenses | (1,232) | (1,118) |
| Other operating income and expenses | (292) | (395) |
| Income (loss) from investments in associated companies | 8 | (19) |
| Income from other investments | 0 | 12 |
| Operating income | 5,906 | 6,335 |
| Operating margin, % | 7.7 | 9.1 |
| Operating income before depreciation and amortization (EBITDA) | 8,717 | 8,993 |
| EBITDA margin, % | 11.3 | 12.9 |