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9. Property, plant and equipment (Details) ¥ in Thousands, $ in Thousands | Dec. 31, 2016 CNY (¥) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 CNY (¥) | Dec. 31, 2015 USD ($)
--- | --- | --- | --- | ---
Building and leasehold improvements | $ |  | $ 1,866 |  | $ 1,866
Leasehold improvements | $ |  | 155 |  | 157
Furniture, fixtures and office equipment | $ |  | 581 |  | 635
Motor vehicles | $ |  | 188 |  | 155
Testing equipment | $ |  | 30 |  | 30
Gross | $ |  | 2,820 |  | 2,843
Less: Accumulated depreciation | $ |  | (2,049) |  | (2,070)
Net | $ |  | $ 771 |  | $ 773
ZHEJIANG JIAHUAN |  |  |  |
Motor vehicles | ¥ 467 |  | ¥ 979 |
Buildings | 34,724 |  | 34,493 |
Plant and machineries | 7,014 |  | 7,011 |
Office equipment | 1,206 |  | 1,148 |
Gross | 43,411 |  | 43,631 |
Less: Accumulated depreciation | (21,550) |  | (19,843) |
Net | 21,861 |  | 23,788 |
ZHEJIANG TIANLAN |  |  |  |
Building and leasehold improvements | 56,665 |  | 56,696 |
Furniture, fixtures and office equipment | 9,660 |  | 9,919 |
Motor vehicles | 4,451 |  | 3,780 |
Plant and machineries | 115,349 |  | 114,617 |
Construction in progress | 211 |  | 0 |
Gross | 186,336 |  | 185,012 |
Less: Accumulated depreciation | (36,496) |  | (23,281) |
Net | ¥ 149,840 |  | ¥ 161,731 |

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- Definition Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.14) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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