Therefore, we think that the problem may be caused by faulty procedures, certain steps in the manufacturing process, which will examine the causes and prevent problems for schools to not impact the work piece the next time.
So we think the problem may be caused by a faulty process at some stage in the production process. This will determine the cause. And to prevent the occurrence of an impact on the work in the future.
So we think the problem might be caused by mistakes some steps step in the production process. Which will check for the cause. And prevent problems in order not to affect the target next time.