When you say card reader, you mean OBU electronic tag equipment, right? Where are your coordinates? Like where I am, I can run CCB ETC credit card. If I meet certain credit card conditions, I can give away an OBU for free, and I can also install it at ETC for free. However, it is not distributed everywhere. It depends on whether the local CCB carries out promotional activities. You can ask the staff of CCB outlets who handle this card. If there is no gift-giving activity, you can drive to the local ETC service outlet, where there is a sale. You take your ID card, driving license and CCB ETC credit card, drive there and buy something that can be loaded directly.