I bought a medical device from Taobao, and when it arrived, the machine was broken and I want to ask the seller for a refund, how do I get it?

You opened and used without? Half of the cases did not use, the label is not broken, does not affect the second sale, directly apply for a refund can be, in addition, if used (label broken), then you can apply for after-sales service. But this depends on the situation, specifically you have to Want to communicate with the seller. But remember, don't pay first, some sellers to "pay + praise" to cash back to attract buyers to pay in advance, in fact, it is through small favors so that buyers give up the right to return their own refunds.