| Operating results | — | — | — | — | — | — |
| Net sales | 3.39a | 3.2a | 2.51a | 1.91a | 2.08a | 2.15a |
| Cost of sales | -2.71a | -2.6a | -2.06a | -1.61a | -1.73a | -1.77a |
| Gross profit | 0.68a | 0.6a | 0.46a | 0.3a | 0.35a | 0.38a |
| Selling, general and administrative expenses | -0.39a | -0.34a | -0.27a | -0.21a | -0.21a | -0.21a |
| Operating income | 0.29a | 0.25a | 0.19a | 0.1a | 0.14a | 0.18a |
| Profit before extraordinary items | 0.31a | 0.27a | 0.21a | 0.1a | 0.15a | 0.19a |
| Profit before income taxes | 0.31a | 0.27a | 0.2a | 0.09a | 0.14a | 0.19a |
| Profit attributable to owners of parent | 0.18a | 0.15a | 0.13a | 0.04a | 0.08a | 0.11a |