Inventories (Details) - USD ($)	Mar. 31, 2019	Mar. 31, 2018
Inventory Disclosure [Abstract]
Raw materials	$ 1,696,353	$ 1,942,366
Work in process	40,143	73,642
Finished goods	234,239	253,174
Total	$ 1,970,735	$ 2,269,182

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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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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 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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