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Construction Loan Facility and Line of Credit (Details Textual)
 1 Months Ended 3 Months Ended 6 Months Ended
Apr. 30, 2020
USD ($)
Jul. 31, 2020
Apr. 30, 2020
USD ($)
Jun. 21, 2013
USD ($)
Jun. 30, 2020
USD ($)
Jun. 30, 2019
USD ($)
Jun. 30, 2020
USD ($)
Jun. 30, 2019
USD ($)
Jun. 30, 2020
CNY (¥)
Apr. 20, 2020
USD ($)
Jun. 21, 2013
CNY (¥)
Construction loan amount $ 1,400,000   $ 1,400,000 $ 13,000,000 $ 8,500,000   $ 8,500,000        
Description of loan interest rates     The loan bears interest at a rate of 4.25% per annum. The loan bears interest based upon 110% of the PRC government’s eight-year term rate effective on the actual draw-down date, subject to annual adjustments based on 110% of the floating rate for the same type of loan on the anniversary from the draw-down date and its subsequent anniversary dates. The interest rate has remained at 5.39% on the anniversary dates which were July 10, 2017, 2018 and 2019, respectively. The loan required interest only payments for the first two years. Beginning July 11, 2015, the principal was due in at least two (2) annual installments with the first annual payment being due within six month period after July 10, 2015 and the second annual payment being due July 10, 2016 and each following year over the next five years through July 11, 2021 on the identical terms as described above for 2015.     The loan bears interest at the rate of 4.05% per annum.        
Principal amount $ 700,000   $ 700,000   143,286   $ 143,286        
Payment due under the loan       $ 2,000,000              
Laon facility term     Advances on the line of credit are due two years from the date of the advance.       The line of credit is due in one year on the anniversary date of the line of credit.        
Total interest expense         63,144 $ 97,254 $ 125,147 $ 184,034      
Line of credit, description Line of credit from a bank for an aggregate amount of RMB 10,000,000 (approximately $1.4 million), of which RMB 5,000,000 (approximately $0.7 million) have been advanced to the Company. Also, in June 2020 the Company obtained an additional line of credit and received advances totaling RMB 8,500,000 (approximately $1.2 million).                    
Subsequent Event [Member]                      
Line of credit, description   Additional RMB 3,000,000 (approximately $0.4 million) has been advanced under this line of credit. The Company has an additional RMB 2,000,000 (approximately $0.3 million) available under the line, subject to a risk review and approval by the third party guarantee company.                  
Postal Savings Bank of China [Member]                      
Total interest expense             4,953        
Bank of Communications [Member]                      
Total interest expense         0   0        
RMB [Member]                      
Construction loan amount         $ 1,200,000   $ 1,200,000     $ 10,000,000 ¥ 80,000,000
Principal amount                 ¥ 1,000,000 $ 5,000,000  
Payment due under the loan       $ 14,000,000