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COMMITMENTS, CONTINGENCIES AND CONCENTRATIONS (Significant customer concentrations as a percentage of total accounts receivable) (Details) - Accounts Receivable [Member] - Customer Concentration Risk [Member]
3 Months Ended
Dec. 30, 2017
Dec. 31, 2016
Haoseng Industrial Co., Ltd [Member]    
Concentration Risk [Line Items]    
Customer concentrations risk percentage [1] 29.60% 13.30%
Super Power International Ltd [Member]    
Concentration Risk [Line Items]    
Customer concentrations risk percentage [1]   12.50%
Xinye Electronics Co [Member]    
Concentration Risk [Line Items]    
Customer concentrations risk percentage [1]   10.80%
[1] Distributor of the Company's products.