v3.22.2.2
Condensed Consolidated Sattements of Income - USD ($)
3 Months Ended
Aug. 31, 2022
Aug. 31, 2021
Income Statement [Abstract]    
Sales, net $ 9,090,699 $ 7,307,737
Cost of goods sold 5,705,942 5,435,558
     Gross profit 3,384,757 1,872,179
Research and development costs 375,346 281,940
Selling, general and administrative expenses 1,831,038 1,472,099
     Operating income 1,178,373 118,140
Other income, net 39,998 63,737
     Income before provision for income taxes 1,218,371 181,877
Provision for income taxes 216,000
     Net income $ 1,002,371 $ 181,877
Basic and diluted earnings per common share $ 0.29 $ 0.05