NOTE 8 - ACCOUNTS PAYABLE AND ACCRUED EXPENSES (Details) - USD ($)	Apr. 30, 2020	Apr. 30, 2019
Details
General liability, worker's compensation, and medical insurance payable	$ 409,811	$ 448,528
Consulting fee payable	256,304	136,770
Union and education fees payable	125,800	131,688
Interest payables for short-term loans	129,976	765,061
Safety production fund payable	140,274
Advanced from the employees	98,775	221,081
Security deposit for sub-contractor	141,864
Other miscellaneous payables	$ 205,708	$ 100,844