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LEASES - Maturities of lease liabilities (Details)
Sep. 30, 2021
USD ($)
Maturities of lease liabilities  
2022 $ 818,817
2023 925,766
2024 951,171
2025 948,701
2026 943,752
Thereafter 3,520,506
Total lease payments 8,108,713
Less: imputed interest 1,409,894
Total $ 6,698,819