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4. Income taxes (Details 1) ¥ in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2014 CNY (¥) | Dec. 31, 2014 USD ($) | Dec. 31, 2013 CNY (¥) | Dec. 31, 2013 USD ($) | Dec. 31, 2012 CNY (¥) | Dec. 31, 2012 USD ($)
Income before income taxes | $ |  | $ (879) |  | $ (157) |  | $ 13
Computed tax using respective companies’ statutory tax rates | $ |  | (194) |  | (49) |  | 31
Change in valuation allowances | $ |  | 93 |  | 124 |  | 166
Under(over) -provision for income tax in prior years | $ |  | 0 |  | 0 |  | 0
Non deductible expenses | $ |  | 119 |  | (2) |  | (55)
Total provision for income tax at effective tax rate | $ |  | $ 18 |  | $ 73 |  | $ 142
ZHEJIANG TIANLAN |  |  |  |  |  |
Income before income taxes | ¥ 14,776 |  | ¥ 7,961 |  | ¥ 933 |
Computed tax using respective companies’ statutory tax rates | 2,216 |  | 1,194 |  | 140 |
Under(over) -provision for income tax in prior years | (2,418) |  | (123) |  | 1,358 |
Temporary differences | 1,575 |  | (445) |  | 0 |
Tax effect on revenue not subject to tax | (695) |  | (242) |  | (56) |
Non deductible expenses | 90 |  | 2,279 |  | 992 |
Total provision for income tax at effective tax rate | 768 |  | 2,663 |  | 2,434 |
ZHEJIANG JIAHUAN |  |  |  |  |  |
Income before income taxes | 5,194 |  | 2,327 |  | 1,535 |
Computed tax using respective companies’ statutory tax rates | 1,299 |  | 582 |  | 384 |
Under(over) -provision for income tax in prior years | (278) |  | 0 |  | 0 |
Tax effect on revenue not subject to tax | (537) |  | (20,983) |  | (20,291) |
Non deductible expenses | 0 |  | 20,455 |  | 19,907 |
Others | 0 |  | (35) |  | 0 |
Total provision for income tax at effective tax rate | ¥ 484 |  | ¥ 19 |  | ¥ 0 |

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- Definition This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 20 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=51673353&loc=d3e41242-110953 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 10 -Article 5 + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e32123-109318 + Details
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- Definition The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Subparagraph 2 -Article 4 + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible expenses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 + Details
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