“我家的彩电用了十几年了,没发生过啥事,为啥要换新的呢?”“家电还有使用寿命?不知道,平时也没人说这事,一般是坏了修,实在不好用了就卖给小贩。”“用得越久说明产品质量越好。”类似这样的说法经常可以听到,许多消费者只会关心食品的保质期, “My family’s color TV with a dozen years, and nothing happened, why change a new one? ” “Home appliances also have a useful life? Do not know, usually no one said this, is generally bad Repair, it is not good to sell to hawkers. ”“ The longer the longer the better the quality of the product. ”" Such statements can often be heard, many consumers will only care about the shelf life of food,