I have already communicated with the customer that the contact points between the handrail and the bracket need to be welded, not fixed with screws. I have already explained this to the customer. The customer is unable to provide evidence to prove the breakage of the glass, and it is impossible to confirm whether it was broken during self-handling or due to other reasons. Moreover, the customer has only provided one photo of the broken glass, but is asking me for compensation for five pieces of broken glass. The dimensions of the other four pieces of glass were provided incorrectly, and they haven't been provided in a timely manner now.