Inventories (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Components of inventories
Raw materials	$ 690,824	$ 835,589
Work-in-process	1,593,815	1,454,999
Finished goods	635,771	2,132,080
Inventory gross	2,920,410	4,422,668
Less: reserve for obsolete inventories	(1,093,326)	(181,646)
Inventory net	$ 1,827,084	$ 4,241,022

Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount of valuation reserve for inventory.

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Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

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