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TRADE ACCOUNTS RECEIVABLE, NET - Summary of Accounts receivable (Details) | Dec. 31, 2019 USD ($) | Dec. 31, 2019 CNY (¥) | Jun. 30, 2019 CNY (¥)
--- | --- | --- | ---
Third Party |  |  |
Total - third-party, net | $ 9,050,441 | ¥ 63,063,443 | ¥ 68,535,282
Related Party |  |  |
Total - related-parties, net | 489,368 | 3,409,912 | 3,409,912
Third Party [Member] |  |  |
Third Party |  |  |
Trade accounts receivable | 9,582,154 | 66,768,415 | 72,180,616
Allowance for doubtful accounts | (531,713) | (3,704,972) | (3,645,334)
Urumqi Yikeli Automatic Control Equipment Co., Ltd [Member] |  |  |
Related Party |  |  |
Total - related-parties, net | $ 489,368 | ¥ 3,409,912 | ¥ 3,409,912

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