NOTE 10 - ACCOUNTS PAYABLE AND ACCRUED EXPENSES (Details) - USD ($)	Jul. 31, 2021	Apr. 30, 2021
Details
General liability, worker's compensation, and medical insurance payable	$ 396,419	$ 412,328
Consulting fee payable	257,359	209,871
Union and education fees payable	137,239	137,123
Interest payables for short-term loans	214,443	147,433
Safety production fund payable	307,980	262,449
Advanced from the employees	209,928	159,909
Security deposit for sub-contractor	154,763	154,631
Other miscellaneous payables	$ 926,738	$ 872,318