kuàidì diūshī shí wùliú dānhào dìngdān jiétú shāngpǐn jiàzhí jìjiàn píngzhèng dōu hěn zhòngyào

快递丢失时，物流单号、订单截图、商品价值、寄件凭证都很重要。

When a package is lost, the tracking number, order screenshot, item value, and shipping receipt are all important.