8. Inventories  9. Other financial assets  10. Other current assets [1] Including US$3,557,000 prepayments made to a major supplier  Other current assets comprise:  The Group has clear guidelines as to the use of those derivatives, and compliance is constantly monitored. For further information on the Group’s  hedging policy please see note 25.  The amount shown under hedging instruments includes the fair value of derivative financial instruments used for cash flow hedges. The Group is  exposed to currency risks in the course of its operating activities. These risks are reduced by the use of forward currency exchange contracts.  The deposits for hedging contracts are an advance settlement for hedging instruments with a negative fair value. The deposits do not bear interests and  are offset with amounts due when the hedge is settled. Other financial assets comprise:  Inventories are comprised of the following:  At 31 December 2012 US$000 At 31 December 2011 US$000 Raw materials  20,686 4,031 Work-in-process  51,739 22,496 Finished goods  79,942 36,110 Deposits  88 – 152,455 62,637 At 31 December 2012 US$000 At 31 December 2011 US$000 Deposits for hedging contracts  368 – Hedging instruments  2,752 25 3,120 25 At 31 December 2012 US$000 At 31 December 2011 US$000 Prepaid expenses  5,581 5,400 Other tax receivables  1,650 1,448 Other $^{1)}$  5,314 1,388 12,545 8,236 87