| 报告时间 | 股东名称 | 持股数量(股) | 占总股本比例(%) |
| 2012-03-31 | 杭州中南五金厂 | 3,251,187 | 1.61 |
| 2011-12-31 | 杭州中南五金厂 | 3,251,187 | 1.61 |
| 2011-09-30 | 杭州中南五金厂 | 3,251,187 | 1.61 |
| 2011-06-30 | 杭州中南五金厂 | 3,251,187 | 1.60 |
| 2011-03-31 | 杭州中南五金厂 | 3,935,538 | 1.94 |
| 2010-12-31 | 杭州中南五金厂 | 3,935,538 | 1.94 |
| 2010-09-30 | 杭州中南五金厂 | 4,435,538 | 2.19 |
| 2010-06-30 | 杭州中南五金厂 | 4,435,538 | 2.19 |
| 2010-03-31 | 杭州中南五金厂 | 4,435,538 | 2.19 |
| 2009-12-31 | 杭州中南五金厂 | 4,435,538 | 2.19 |
| 2009-09-30 | 杭州中南五金厂 | 4,435,538 | 2.19 |
| 2009-06-30 | 杭州中南五金厂 | 4,435,538 | 2.19 |
| 2009-03-31 | 杭州中南五金厂 | 4,435,538 | 2.19 |
| 2008-12-31 | 杭州中南五金厂 | 4,435,538 | 2.19 |
| 2008-09-30 | 杭州中南五金厂 | 4,435,538 | 3.84 |
| 2008-06-30 | 杭州中南五金厂 | 4,435,538 | 3.84 |
| 2008-03-31 | 杭州中南五金厂 | 4,435,538 | 3.84 |
| 2007-12-31 | 杭州中南五金厂 | 4,435,538 | 3.84 |
| 2007-09-30 | 杭州中南五金厂 | 4,435,538 | 3.84 |
| 2007-06-30 | 杭州中南五金厂 | 4,453,448 | 3.86 |