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Inventories | 3 Months Ended
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Mar. 31, 2017
Inventories [Text Block] |
4. | Inventories
| Inventories as of December 31, 2016 and March 31, 2017 consisted of the following:
|  |  | December 31, |  |  | March 31, |
|  |  | 2016 |  |  | 2017 |
| Raw materials | $ | 2,570,942 |  | $ | 2,423,512 |
| Work in progress |  | 1,333,949 |  |  | 1,694,711 |
| Finished goods |  | 13,190,031 |  |  | 13,193,288 |
|  | $ | 17,094,922 |  | $ | 17,311,511 |
| During the three months ended March 31, 2016 and 2017, write-downs of obsolete inventories to lower of cost or market of $96,910 and $150,156, respectively, were charged to cost of revenues.

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- Definition The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory. + 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 210.5-02.6) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6361739&loc=d3e7789-107766 + Details
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Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration