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Pledged deposits (Details Textual) | Jul. 07, 2016 USD ($) | Jul. 07, 2016 CNY (¥) | Sep. 01, 2017 USD ($) | Sep. 07, 2016 USD ($) | Sep. 07, 2016 CNY (¥)
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Shenzhen Huijie [Member] |  |  |  |  |
Pledged deposits (Textual) |  |  |  |  |
Loss Contingency, Damages Sought, Value | $ | $ 1,225,709 |  |  |  |
Bank deposits frozen | $ |  |  | $ 1,225,709 | $ 1,225,709 |
Shenzhen Huijie [Member] | RMB [Member] |  |  |  |  |
Pledged deposits (Textual) |  |  |  |  |
Loss Contingency, Damages Sought, Value | ¥ |  | ¥ 8,430,792 |  |  |
Bank deposits frozen | ¥ |  |  |  |  | ¥ 1,225,709
Construction costs [Member] |  |  |  |  |
Pledged deposits (Textual) |  |  |  |  |
Loss Contingency, Damages Sought, Value | $ | 900,000 |  |  |  |
Construction costs [Member] | RMB [Member] |  |  |  |  |
Pledged deposits (Textual) |  |  |  |  |
Loss Contingency, Damages Sought, Value | ¥ |  | 6,100,000 |  |  |
Interest [Member] |  |  |  |  |
Pledged deposits (Textual) |  |  |  |  |
Loss Contingency, Damages Sought, Value | $ | 29,766 |  |  |  |
Interest [Member] | RMB [Member] |  |  |  |  |
Pledged deposits (Textual) |  |  |  |  |
Loss Contingency, Damages Sought, Value | ¥ |  | 200,000 |  |  |
Compensation [Member] |  |  |  |  |
Pledged deposits (Textual) |  |  |  |  |
Loss Contingency, Damages Sought, Value | $ | $ 300,000 |  |  |  |
Compensation [Member] | RMB [Member] |  |  |  |  |
Pledged deposits (Textual) |  |  |  |  |
Loss Contingency, Damages Sought, Value | ¥ |  | ¥ 1,900,000 |  |  |

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- Definition The value (monetary amount) of the award the plaintiff seeks in the legal matter. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14557-108349 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14435-108349 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349 + Details
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