CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)	Sep. 30, 2019	Mar. 31, 2019
Current assets:
Cash and cash equivalents	$ 2,554,512	$ 2,036,646
Accounts receivable, net	826,841	1,010,443
Contract assets	3,589,021	4,390,832
Inventories	1,902,965	1,240,315
Other current assets	619,833	498,059
Total current assets	9,493,172	9,176,295
Property, plant and equipment, net	4,492,123	4,860,609
Deferred income taxes	2,021,704	2,004,346
Other noncurrent assets, net	10,263	6,233
Total assets	16,017,262	16,047,483
Current liabilities:
Accounts payable	783,393	609,082
Accrued expenses	859,585	753,499
Contract liabilities	816,385	740,947
Current portion of long-term debt	853,888	822,105
Total current liabilities	3,313,251	2,925,633
Long-term debt	2,994,835	3,410,542
Commitments and contingent liabilities ( Note 13)
Stockholders' Equity:
Common stock - par value $.0001 per share, 90,000,000 shares authorized, 29,254,594 and 29,234,594 shares issued and outstanding, at September 30, 2019 and March 31, 2019	2,925	2,923
Additional paid in capital	8,761,554	8,693,106
Accumulated other comprehensive income	21,602	21,940
Retained earnings	923,095	993,339
Total stockholders' equity	9,709,176	9,711,308
Total liabilities and stockholders' equity	$ 16,017,262	$ 16,047,483