I have contacted Apple Support and received an answer, so there is nothing in particular for your company to do for me, but when I received and checked the product, the Chinese language scrawl was the first thing that lowered the credibility of your company. It may be unclear whether I am Japanese or not, but it is also unclear whether I can read Chinese or not. As a result, I couldn't read Chinese, so the scrip had no meaning, and it didn't make a good impression for domestic distribution. In addition, the colour name of the tab part of the finder was written in Chinese after start-up, and I tried several times to do a clean install of everything, but it did not improve, so I contacted Apple Support. As a result, even Apple Support could not solve the problem and said that there was a part of the system other than the OS that could not be rewritten and that the Chinese notation could not be fixed. Apple Support replied that there was no particular problem with the use of the device, so we did not make any request to your company. There are no problems in use at the moment, but I personally feel uncomfortable with refurbished products that have parts that even Apple Support can't f...

Have you checked and tested the operation properly? The problem is that the mac itself has a problem with the diagnostics. The problem is not diagnosed using Apple Diagnostics, or is it diagnosed and sold with a problem? If they are not diagnosing the problem, I would really like you to diagnose the problem with Apple Diagnostics on all macs in the future before selling them. Please do this to reduce the number of people having a bad experience.