By declaring a higher value for carriage in the declared value field of the ups source document or the ups shipping system used and paying an additional charge , you can increase our limit of liability up to the declared value over hkd 800 , to certain maximum limits 您可于ups来源文件之申报价值栏位中申报较高的运送值,或使用ups托运系统,并支付附加费,来将我们的责任限制增加至超过800港元的申报价值,直至达到特定限制。