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Prepayment on property, plant and equipment (Details) (USD $) | Mar. 31, 2013 sqm | Dec. 31, 2012
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Prepayment on property, plant and equipment (Textual) |  |
Prepayment on property, plant and equipment | $ 1,455,335 | $ 1,445,645
Entitlement of land use rights | 54,267 |

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- Definition Entitlement of land use rights. + References No definition available. + Details
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- Details
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- Definition Carrying amount as of the balance sheet date of amounts paid in advance which will be charged against earnings in periods after one year or beyond the operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 17 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 4 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=6361293&loc=d3e6812-107765 + Details
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