CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	3 Months Ended
Jun. 30, 2019	Jun. 30, 2018
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 220,777	$ 164,385
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	190,005	185,585
Amortization of debt issue costs	10,741	15,231
Stock based compensation expense	30,625	24,930
Change in contract loss provision	120,393	(15,875)
Deferred income taxes	90,218	65,029
Changes in operating assets and liabilities:
Accounts receivable	144,381	730,574
Contract assets	1,517,221	(2,119,085)
Inventories	38,517	(48,518)
Other current assets	78,219	34,868
Accounts payable	(342,639)	(12,907)
Accrued expenses	5,915	118,339
Contract liabilities	(401,097)	567,517
Net cash provided by (used in) operating activities	1,703,276	(289,927)
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of property, plant and equipment	(10,200)	(101,695)
Net cash used in investing activities	(10,200)	(101,695)
CASH FLOWS FROM FINANCING ACTIVITIES
Repayment of long-term debt	(199,533)	(186,896)
Net cash used in financing activities	(199,533)	(186,896)
Effect of exchange rate on cash and cash equivalents	164	661
Net increase (decrease) in cash and cash equivalents	1,493,707	(577,857)
Cash and cash equivalents, beginning of period	2,036,646	2,689,110
Cash and cash equivalents, end of period	3,530,353	2,111,253
Cash paid during the year for:
Interest	65,723	80,066
Income taxes	$ 0	$ 0

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Amount of amortization expense attributable to debt issuance costs.

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Gain (loss) related to the termination of a contract between the parties. The termination may be due to many causes including early termination of a lease by a lessee, a breach of contract by one party, or a failure to perform.

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