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Depreciation, amortization, shipping and handling expenses - Summary of Finance Costs (Detail)
¥ in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2021
CNY (¥)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
CNY (¥)
Dec. 31, 2019
CNY (¥)
Profit or loss [abstract]        
Bank term loans ¥ 82,109 $ 12,987 ¥ 95,357 ¥ 76,721
Bills discounting 27,864 4,408 49,738 47,212
Bank charges 4,136 654 3,877 4,945
Interest on lease liabilities (Note 17) 1,819 288 2,198 2,918
Finance costs ¥ 115,928 $ 18,337 ¥ 151,170 ¥ 131,796