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4. Income taxes (Details 2) ¥ in Thousands, $ in Thousands | Dec. 31, 2014 CNY (¥) | Dec. 31, 2014 USD ($) | Dec. 31, 2013 CNY (¥) | Dec. 31, 2013 USD ($)
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The components of deferred tax assets are as follows: |  |  |  |
Tax losses |  | $ 1,131 |  | $ 1,045
Temporary differences |  | 4 |  | 6
Less: Valuation allowances |  | (908) |  | (815)
Net deferred tax assets |  | $ 227 |  | $ 236
ZHEJIANG TIANLAN |  |  |  |
The components of deferred tax assets are as follows: |  |  |  |
Tax losses | ¥ | ¥ 0 |  | ¥ 0 |
Allowance for doubtful debts | ¥ | 4,350 |  | 2,959 |
Net deferred tax assets | ¥ | ¥ 4,350 |  | ¥ 2,959 |

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