20.  Other receivables 31.12.2012 31.12.2013 31.12.2013 Rmb’000 Rmb’000 US$’000 Staff advances 9,766 12,326 2,014 Associates and joint ventures 61,456 155,968 25,485 Other related parties 20,148 7,202 1,177 Interest receivables 7,752 16,293 2,662 Bills receivable in transit 45,800 17,523 2,863 Others 27,536 7,741 1,265 Impairment losses – other receivables  (i) (640) (1,275) (209) Loans and receivables (Note 34) 171,818 215,778 35,257 Tax recoverable 71,515 100,403 16,406 Total 243,333 316,181 51,663 For terms and conditions relating to related parties, refer to Note 28. Note: (i)  An analysis of the impairment losses – other receivables is as follows: 31.12.2012 31.12.2013 31.12.2013 Rmb’000 Rmb’000 US$’000 At January 1 15,978 640 105 (Credit)/debit to consolidated statement of profit or loss (4,463) 894 146 Written off (10,957) (259) (42) Translation differences 82 —  —  At December 31 640 1,275 209 The Group’s historical experience in the collection of other receivables falls within the recorded allowances. Due to  this factor, management believes that no additional credit risks beyond the amount provided for collection losses are  inherent in the Group’s other receivables. China Yuchai International Limited | Annual Report 2013 99 NOTES TO THE CONSOLIDATED FINANCIAL  STATEMENTS  (RMB AND US$ AMOUNTS EXPRESSED IN THOUSANDS, EXCEPT PER SHARE DATA) 