Quarterly report pursuant to Section 13 or 15(d)

Sales, Contract Assets and Contract Liabilities (Details)

v3.19.3
Sales, Contract Assets and Contract Liabilities (Details) - USD ($)
3 Months Ended 6 Months Ended
Sep. 30, 2019
Sep. 30, 2019
Total recognized sales revenues $ 62,738,544 $ 67,502,779
Specified service works [Member]    
Total recognized sales revenues 381,338 381,338
Certified design and engineering works [Member]    
Total recognized sales revenues 24,448,427 26,121,354
Delivered equipment to customers, net of obligations [Member]    
Total recognized sales revenues 33,251,840 36,040,052
Commissioned equipment [Member]    
Total recognized sales revenues $ 4,656,939 $ 4,960,035