3. If the owner already has a credit card and wants to use it to bind the ETC function, sorry, this is not within the scope of this free gift device, so even if he has a credit card in his hand, he still needs to apply for a new credit card for free. The original card shares the quota with the new card. Of course, he can cancel the original credit card and only use the new card. 4. If the owner has a savings card and wants to bind the ETC function, a certain amount of deposit must be frozen according to the requirements of the transportation department, and the equipment is not given away for free.