| 日期/Date | 事件/Event | 地點/Location |
| 2010/2/23 | ESE, CPST, SOL, STP at Piper Jaffray Clean Technology & Renewables Conference | |
| 2010/2/23 | ESE, CPST, SOL, STP at Piper Jaffray Clean Technology & Renewables Conference | |
| 2010/2/23 | ESE, CPST, SOL, STP at Piper Jaffray Clean Technology & Renewables Conference | |
| 2010/2/23 | ESE, CPST, SOL, STP at Piper Jaffray Clean Technology & Renewables Conference | |