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Business (Tables) | 12 Months Ended
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Aug. 31, 2012
Business |
Schedule of consolidated subsidiaries |
Subsidiaries |  | Main Activities |  | Jurisdiction of Incorporation |  | August 31, 2012 |  | August 31, 2011 |
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SemiLEDs Optoelectronics Co., Ltd. ("Taiwan SemiLEDs") |  | Research, development, manufacturing, marketing and sale of LED products, consisting primarily of LED chips and LED components |  | Taiwan |  |  | 100 | % |  | 100 | %
Helios Crew Corporation ("Helios Crew") |  | Sale of LED components through the Taiwan branch office |  | Delaware |  |  | 100 | % |  | 100 | %
SemiLEDs International Corporation Ltd. ("Hong Kong SemiLEDs") |  | Investment holding |  | Hong Kong |  |  | 100 | % |  | 100 | %
Silicon Base Development, Inc. ("SBDI") |  | Sale of LED components |  | Taiwan |  |  | 100 | % |  | 100 | %
Ning Xiang Technology Co., Ltd. ("Ning Xiang") |  | Research, development, manufacturing, marketing and sale of lighting fixtures and systems |  | Taiwan |  |  | 51 | % |  | 51 | %
Xuhe Guangdian Co., Ltd. ("Shenzhen SemiLEDs") |  | Sales and support services |  | China |  |  | 100 | % |  | — |
HB Lighting Co., Ltd. ("HB Lighting") |  | Sale of LED components |  | Taiwan |  |  | 100 | % |  | — |

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