Which friend has used the shearing machine and bending machine of Nanjing Golden Globe Award? I want to ask about quality and after-sales service. Are there many questions?

Let me talk about my situation first. We have benders and shears at the Golden Globe Awards, and there are many minor problems. The after-sales service is not in place, reflecting that no one has come to repair it for more than two months. We called their company and asked them to look for this and that. Finally, we ask you to help them check which part of the machine is out of order, which makes people very angry and seriously affects production. I regret it now. ......