Those two people upstairs are right. There are many second-hand excavators, including intermediaries, individuals, markets and companies. However, the most important thing for the second mobile phone is to be genuine. You can't buy rice mixers and refurbished machines. You will lose money if you buy it back. You can go to Yi Bei to see if there are any models you need. Each device has a test report. If you are optimistic, you don't need to find a mechanic who knows the excavator.