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v3.21.4

Advances to suppliers, net - Additional information (Details) |  |  | 1 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jan. 25, 2022 USD ($) | Apr. 01, 2016 item | Jun. 30, 2021 | Apr. 30, 2019 | Sep. 30, 2021 USD ($) | Sep. 30, 2020 USD ($) | Oct. 01, 2020 USD ($) | Sep. 30, 2019 USD ($) | Sep. 30, 2018 USD ($)
Share-based Goods and Nonemployee Services Transaction [Line Items] |  |  |  |  |  |  |  |  |
Advances to suppliers |  |  |  |  | $ 66,718,632 | $ 23,350,467 | $ 24,074,122 | $ 13,994,091 |
Frame work Agreement |  |  | 3 years | 3 years |  |  |  |  |
Allowance for doubtful accounts |  |  |  |  | 8,094 | 119,199 |  | $ 0 | $ 0
Allowance for doubtful debts relating to advances to suppliers |  |  |  |  | $ 0 | $ 723,655 |  |  |
Two suppliers |  |  |  |  |  |  |  |  |
Share-based Goods and Nonemployee Services Transaction [Line Items] |  |  |  |  |  |  |  |  |
Advances to suppliers | $ 35,400,000 |  |  |  |  |  |  |  |
Percentage of advances to suppliers utilized | 53.10% |  |  |  |  |  |  |  |
Percentage of advances to suppliers on each purchase order | 30.00% |  |  |  |  |  |  |  |
Number of suppliers | item |  | 2 |  |  |  |  |  |  |

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- Definition Amount of allowance for credit loss on accounts receivable, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(4) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5074-111524 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 + Details
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- Definition Amount of consideration paid in advance for supplies that provide economic benefits within a future period of one year or the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (g)(7) -URI http://asc.fasb.org/extlink&oid=124098289&loc=d3e6676-107765 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 10 -Section 05 -Paragraph 5 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=123349782&loc=d3e5879-108316 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=124098289&loc=d3e6787-107765 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6387103&loc=d3e6435-108320 + Details
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