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COMMITMENTS, CONTINGENCIES AND CONCENTRATIONS (Significant customer concentrations as a percentage of total accounts receivable) (Details)
12 Months Ended
Sep. 30, 2017
Oct. 01, 2016
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Haoseng Industrial Co., Ltd [Member]    
Concentration Risk [Line Items]    
Customer concentrations risk percentage 26.20% 20.80%