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Summary of Principal Accounting Policies (Details 5)
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12 Months Ended |
|---|---|
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Dec. 31, 2014
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|
| Buildings | |
| Property and equipment, net | |
| Estimated useful life | 30 years |
| Motor vehicles | |
| Property and equipment, net | |
| Estimated useful life | 5 years |
| Minimum | Furniture, fixtures and equipment | |
| Property and equipment, net | |
| Estimated useful life | 3 years |
| Maximum | Furniture, fixtures and equipment | |
| Property and equipment, net | |
| Estimated useful life | 5 years |