CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	3 Months Ended
	Jul. 31, 2022	Jul. 31, 2021
CASH FLOWS FROM OPERATING ACTIVITIES
Net loss	$ (194,151)	$ (750,117)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities
Depreciation and amortization expenses	332,528	384,261
Loss on disposition of property and equipment	4,636	394,967
Provisions for obsolete inventories	78,280	187,704
Changes in operating assets and liabilities
Accounts receivable and notes receivable	(2,430,673)	(338,982)
Accounts receivable - related party	0	(952,712)
Inventories	245,575	808,811
Prepaid expenses and other current assets	492,718	(1,435,530)
Accounts payable and accrued expenses	2,248,780	(128,715)
Taxes payable	257,352	(704)
NET CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES	1,035,045	(1,831,017)
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of property and equipment	(56,440)	(584)
Purchases of land use rights	0	(2,057,268)
NET CASH USED IN INVESTING ACTIVITIES	(56,440)	(2,057,852)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from short term loans	0	1,194,966
Repayment of short term loans	(348,763)	0
Advance from related parties	2,236	5,265,725
Repayment of related party advances	(1,043)	(3,476,199)
NET CASH (USED IN) PROVIDED BY FINANCING ACTIVITIES	(347,570)	2,984,492
EFFECT OF EXCHANGE RATE ON CASH	(9,446)	8,980
NET INCREASE IN CASH	621,589	(895,397)
Cash at the beginning of period	321,193	1,565,829
Cash at the end of period	942,782	670,432
SUPPLEMENTAL DISCLOSURE OF CASH FLOWS INFORMATION
Cash paid for income taxes	0	0
Cash paid for interest	4,256	0
NON-CASH INVESTING AND FINANCING ACTIVITIES
Property and equipment acquired on credit as payable	1,491	0
Accrued interest enrolled into debt	137,752	0
Accrued interest payable to related party	$ 5,552	$ 5,254