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Trade and Other Receivables - Summary of Trade and Other Receivables (Detail) ¥ in Thousands, $ in Thousands	Dec. 31, 2020 CNY (¥)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 CNY (¥)
Current
Trade receivables, gross	¥ 332,567	$ 51,391	¥ 794,678
Less: Allowance for expected credit losses	(43,519)	(6,725)	(57,611)
Net trade receivables (Note 6.2)	289,048	44,666	737,067
Bill receivables	7,793,343	1,204,293	7,005,234
Total (Note 34)	8,082,391	1,248,959	7,742,301
Current receivables from associates and joint ventures (trade)	1,266	196	609
Current receivables from associates and joint ventures (non-trade)	11,119	1,718	11,185
Current receivables from related parties (trade)	9,663	1,493	73,243
Current receivables from related parties (non-trade)	2,992	462	2,092
Staff advances	3,326	514	7,133
Interest receivables	4,999	772	12,224
Bills receivable in transit	12,620	1,950	8,700
Refundable deposits	283	44	2,131
Others	36,668	5,667	49,218
Less: Impairment losses – other receivables	(6,741)	(1,042)	(5,243)
Other receivables carried at amortized cost (Note 34)	76,195	11,774	161,292
Tax recoverable	236,400	36,531	223,652
Prepayments	64,102	9,906	63,048
Net other receivables	376,697	58,211	447,992
Total trade and other receivables	¥ 8,459,088	$ 1,307,170	¥ 8,190,293

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Current bills receivable.

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Bills receivable in transit in other receivables.

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Current non trade receivables due from associates and joint ventures.

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Current non trade receivables due from related parties.

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- Definition

Staff advances in other receivables.

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- Definition

Current trade and bill receivables.

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- Definition

Current trade receivables due from associates and joint ventures.

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Current trade receivables due from related parties.

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- Definition

Current trade receivables net.

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- Definition

Expected credit losses.

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- Definition

Impairment loss on other receivables.

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Miscellaneous other current receivables.

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- Definition

Refundable deposits.

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- Definition

The amount of current interest receivable. [Refer: Interest receivable]

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- Definition

The amount of current loans and receivables. [Refer: Loans and receivables]

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The amount of current prepayments. [Refer: Prepayments]

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The current amount of current tax assets. [Refer: Current tax assets]

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- Definition

The amount of current trade receivables. [Refer: Trade receivables]

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- Definition

The amount of current other receivables. [Refer: Other receivables]

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The amount of current trade receivables and current other receivables. [Refer: Current trade receivables; Other current receivables]

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