本帖最後由 aleck_choi 於 2017-12-28 16:44 編輯
唔該先了解 trade in 定義啦:buyers are offered a fixed discount (called trade-in allowance) on the price of a new model or item in exchange for a older model or item.
唔買新機,淨係放舊機,就唔係 trade in , 係賣/放機
唔維修舊機,淨係換機,就唔係叫整機,係換機喇 |