| 6 | Other operating income |
| 2015 | 2016 | 2017 | ||||||||||
| RMB’000 | RMB’000 | RMB’000 | ||||||||||
| Government grants (i) |
150,116 | 144,631 | 65,703 | |||||||||
| Rental income from investment property (Note 16) |
48,553 | 46,164 | 46,700 | |||||||||
| Income from pipeline transportation services |
6,731 | 5,215 | 4,454 | |||||||||
| Others |
29,524 | 1,296 | 2,153 | |||||||||
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| 234,924 | 197,306 | 119,010 | ||||||||||
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| (i) | Government grants |
Grants related to R&D and other tax refund of RMB 65,266 thousands (2016: RMB 144,631 thousands, 2015: RMB 150,116 thousands) are included in the “government grants” line item. There are no unfulfilled conditions or other contingencies attaching to these grants. The Group did not benefit directly from any other forms of government assistance.
Deferral and presentation of government grants
Government grants relating to the purchase of property, plant and equipment are included in non-current liabilities as “deferred income” and are credited to profit or loss on a straight-line basis over the expected lives of the related assets. See Note 28 for further details. For the year ended 31 December 2017, RMB 437 thousands (For the year ended 31 December 2016 and 2015: Nil) were included in the government grants line item.