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3. STOCKHOLDERS' EQUITY (Details - Stock based compensation) - USD ($)
12 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Stock based compensation expense $ 52,341 $ 201,612
Cost of Goods Sold [Member]    
Stock based compensation expense 8,669 34,676
Research and Development Expenses [Member]    
Stock based compensation expense 15,423 31,952
Selling, General and Administrative Expenses [Member]    
Stock based compensation expense $ 28,249 $ 134,984