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v3.25.1

CONCENTRATIONS (Details) $ in Millions | 6 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2024 CNY (¥) | Dec. 31, 2023 | Dec. 31, 2024 USD ($) | Dec. 31, 2024 HKD ($) | Jun. 30, 2024 CNY (¥)
China |  |  |  |  |
CONCENTRATIONS |  |  |  |  |
Cash was on deposit at financial institutions | ¥ 66,200,000 |  | $ 9.1 |  | ¥ 90,300,000
Maximum insured bank deposit | ¥ | 500,000 |  |  |  |
Unprotected cash held in banks | 60,400,000 |  | 8.3 |  | 84,400,000
Hong Kong |  |  |  |  |
CONCENTRATIONS |  |  |  |  |
Cash was on deposit at financial institutions | 79,100,000 |  | 10.8 |  | 108,700,000
Maximum insured bank deposit | $ |  |  |  | $ 800,000 |
Unprotected cash held in banks | ¥ 76,500,000 |  | $ 10.5 |  | ¥ 105,500,000
CNPC | Customer concentration | Total revenue |  |  |  |  |
CONCENTRATIONS |  |  |  |  |
Concentration risk, percentage | 50.00% | 56.00% |  |  |
CNPC | Customer concentration | Accounts receivable |  |  |  |  |
CONCENTRATIONS |  |  |  |  |
Concentration risk, percentage | 29.00% | 34.00% |  |  |
SINOPEC | Customer concentration | Total revenue |  |  |  |  |
CONCENTRATIONS |  |  |  |  |
Concentration risk, percentage | 8.00% | 19.00% |  |  |
SINOPEC | Customer concentration | Accounts receivable |  |  |  |  |
CONCENTRATIONS |  |  |  |  |
Concentration risk, percentage | 21.00% |  |  |  |
SINOPEC | Customer one | Accounts receivable |  |  |  |  |
CONCENTRATIONS |  |  |  |  |
Concentration risk, percentage |  | 14.00% |  |  |
CNOOC | Customer concentration | Total revenue |  |  |  |  |
CONCENTRATIONS |  |  |  |  |
Concentration risk, percentage | 9.00% | 15.00% |  |  |
CNOOC | Customer concentration | Accounts receivable |  |  |  |  |
CONCENTRATIONS |  |  |  |  |
Concentration risk, percentage | 9.00% | 21.00% |  |  |
Another customer | Customer concentration | Total revenue |  |  |  |  |
CONCENTRATIONS |  |  |  |  |
Concentration risk, percentage | 33.00% | 10.00% |  |  |
Another customer | Customer concentration | Accounts receivable |  |  |  |  |
CONCENTRATIONS |  |  |  |  |
Concentration risk, percentage | 40.00% | 30.00% |  |  |

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