The ECT credit card can be used for ECT deductions or as an ordinary credit card for consumption. The correct steps for inserting an ECT credit card are as follows: 1. The customer inserts the ETC card into the OBU device with the front facing the driver and the back of the card facing the front glass chip. Insert the ETC card into the OBU device. After insertion, it does not affect the normal use of the main card. 2. ETC cards without financial functions can be inserted into the OBU for a long time. 3. The credit card, as a debit account bound to the Houmuschangguanduijianguiheli Drawing Station, does not need to be placed in the OBU and unnecessary losses will be caused by forgetting it in the car.