What is the approximate selling price of the company's current positioning solution, and what is the dynamic accuracy and availability of the solution on the average urban roadway (non-freeway and expressway)?
 
      For the current selling price of the solution, it mainly depends on the type of work we are going to do, and the price can be high or low. But with the future large-scale application, the price can be very reasonable and low. RTK high-precision positioning in the high-speed, if it is under the premise of network stability, is able to achieve a very high availability rate, generally can do more than 95%.