Depreciation of property, plant and equipment, investment property and amortization of prepaid operating leases are included in the following captions.
| 31.12.2015 | 31.12.2016 | 31.12.2017 | 31.12.2017 | |||||||||||||
| RMB’000 | RMB’000 | RMB’000 | US$’000 | |||||||||||||
|
Cost of sales |
319,962 | 322,289 | 307,102 | 48,520 | ||||||||||||
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Research and development expenses |
58,204 | 56,812 | 48,291 | 7,630 | ||||||||||||
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Selling, general and administrative expenses |
91,269 | 99,059 | 88,788 | 14,027 | ||||||||||||
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| 469,435 | 478,160 | 444,181 | 70,177 | |||||||||||||
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