Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

SIGNIFICANT ACCOUNTING POLICIES - Ownership (Details)

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SIGNIFICANT ACCOUNTING POLICIES - Ownership (Details) - 12 months ended Sep. 30, 2021
USh in Millions
USD ($)
UGX (USh)
CNY (¥)
HKD ($)
Subsidiary One        
Entity Name ZK International      
Registered Location BVI      
Incorporated date May 13, 2015      
Registered capital $ 50,000      
Subsidiary One | WANG Ming Jie        
Ownership as of the issuance date of the report 16.82%      
Subsidiary One | WANG Guo Lin        
Ownership as of the issuance date of the report 6.22%      
Subsidiary Two        
Entity Name ZK Pipe      
Registered Location Hong Kong      
Incorporated date May 28, 2015      
Registered capital       $ 1,000,000
Subsidiary Two | ZK International        
Ownership as of the issuance date of the report 100.00%      
Subsidiary Three        
Entity Name Wenzhou Weijia      
Registered Location Wenzhou      
Incorporated date Jun. 17, 2015      
Registered capital $ 20,000,000      
Subsidiary Three | ZK Pipe        
Ownership as of the issuance date of the report 100.00%      
Subsidiary Four        
Entity Name Zhejiang Zhengkang      
Registered Location Wenzhou      
Incorporated date Dec. 04, 2001      
Registered capital | ¥     ¥ 100,000,000  
Paid in capital | ¥     30,000,000  
Subsidiary Four | HUANG Jian Cong        
Ownership as of the issuance date of the report 1.00%      
Subsidiary Four | Wenzhou Weijia        
Ownership as of the issuance date of the report 99.00%      
Subsidiary Five        
Entity Name Wenzhou Zhengfeng      
Registered Location Wenzhou      
Incorporated date Dec. 24, 1999      
Registered capital | ¥     ¥ 2,880,000  
Subsidiary Five | Zhejiang Zhengkang        
Ownership as of the issuance date of the report 100.00%      
Subsidiary Six        
Entity Name ZK Uganda      
Registered Location Uganda      
Incorporated date Mar. 23, 2018      
Registered capital | USh   USh 20    
Subsidiary Six | ZK International        
Ownership as of the issuance date of the report 80.00%      
Subsidiary Seven        
Entity Name xSigma Corporation      
Registered Location BVI      
Incorporated date Jan. 18, 2018      
Registered capital $ 50,000      
Subsidiary Seven | ZK International        
Ownership as of the issuance date of the report 51.00%      
Subsidiary Eight        
Entity Name xSigma Collectibles Limited      
Registered Location BVI      
Incorporated date Jul. 06, 2021      
Registered capital $ 100      
Subsidiary Eight | ZK International        
Ownership as of the issuance date of the report 100.00%      
Subsidiary Nine        
Entity Name xSigma Entertainment Limited      
Registered Location BVI      
Incorporated date Mar. 17, 2021      
Registered capital $ 50,000      
Subsidiary Nine | ZK International        
Ownership as of the issuance date of the report 100.00%      
Subsidiary Ten        
Entity Name xSigma Trading LLC      
Registered Location Daleware, United States      
Incorporated date Jun. 07, 2021      
Registered capital and paid in capital $ 0      
Subsidiary Ten | xSigma Corporation        
Ownership as of the issuance date of the report 100.00%      
xSigma Collectibles Limited        
Registered capital $ 100      
Paid in capital 0      
xSigma Entertainment Limited        
Registered capital 50,000      
Paid in capital $ 0      
Ownership as of the issuance date of the report 15.73%      
xSigma Trading LLC        
Registered capital $ 0      
Paid in capital $ 0