Annual Report 2018

219 年報 ANNUAL REPORT 2018 FOR THE YEAR ENDED 31 DECEMBER 2018 　截至二零一八年十二月三十一日止年度 綜合財務報告附註 NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS 4 重大會計判斷和估計不確定因素 之主要來源 （續） (b) 物業、廠房及設備及預付租賃 款項減值評估 當任何事件或情況變化顯示賬面值 可能無法收回時，物業、廠房及設 備及預付租賃款項會進行減值檢 討。可收回金額乃根據使用價值計 算或公平值減銷售成本之較高者釐 定。 計算需要使用判斷和估計。資產減 值部分需要管理層的判斷進行，特 別是在評估時： (i) 是否發生了可能 表明相關資產價值無法收回的事 件； (ii) 資產的賬面值是否可以由可 收回金額支持，即公平值減去出售 成本與未來現金流量淨現值之間的 較高者，而該等現金流量乃根據業 務持續使用該資產而估計；及 (iii) 在編制現金流量預測時應採用的適 當關鍵假設，包括這些現金流量預 測是否以適當的利率貼現。管理層 在評估減值時更改所選擇的假設， 包括現金流量預測中的鋼簾線價格 年增長率或貼現率的假設，可能會 影響減值測試中使用的淨現值，從 而影響本集團的財務狀況和營運業 績。 4 Critical accounting judgments and key sources of estimation uncertainty (continued) (b) Impairment assessments of property, plant and equipment and prepaid lease payments Property, plant and equipment and prepaid lease payments are reviewed for impairment whenever events or change in circumstances indicate that the carrying amounts may not be recoverable. The recoverable amounts have been determined based on the higher of value-in-use calculations or fair value less costs to sell calculations. The calculations require the use of judgements and es t ima t es . Managemen t j udgemen t i s r equ i r ed i n t h e a r e a o f a s s e t i mpa i rme n t particularly in assessing: (i) whether an event has occurred that may indicate that the related asset values may not be recoverable; (ii) whether the carrying amount of an asset can be supported by the recoverable amount, being the higher of fair value less costs to sell and net present value of future cash flows which are estimated based upon the continued use of the asset in the business; and (iii) the appropriate key assumptions to be applied in preparing cash flow projections including whether these cash flow projections are discounted using an appropriate rate. Changing the assumptions selected by management in assessing impairment, including the rate of annual increment for the steel cord price or the discount rates assumptions in the cash flow projections, could affect the net present value used in the impairment test and as a result affect the Group’s financial position and results of operations.