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4. Income taxes (Details) ¥ in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2016 CNY (¥) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 CNY (¥) | Dec. 31, 2015 USD ($) | Dec. 31, 2014 CNY (¥) | Dec. 31, 2014 USD ($)
Profit/(loss before) income taxes/(benefit): The PRC and Hong Kong |  | $ (640) |  | $ (1,904) |  | $ (879)
The provision / (credit) for income taxes consist of: |  |  |  |  |  |
Current tax expenses: The PRC and Hong Kong |  | 212 |  | (72) |  | 8
Total current provision / (credit) |  | 212 |  | (72) |  | 8
Deferred tax expenses: The PRC and Hong Kong |  | 16 |  | 25 |  | 10
Total deferred provision |  | $ 16 |  | $ 25 |  | $ 10
ZHEJIANG TIANLAN |  |  |  |  |  |
The provision / (credit) for income taxes consist of: |  |  |  |  |  |
Current PRC EIT Domestic | ¥ | ¥ 6,298 |  | ¥ 3,351 |  | ¥ 3,950 |
Total current provision / (credit) | ¥ | 6,298 |  | 3,351 |  | 3,950 |
Deferred tax benefit: | ¥ | (1,337) |  | (177) |  | (1,391) |
Total deferred provision | ¥ | ¥ (1,337) |  | ¥ (177) |  | ¥ (1,391) |

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