The purpose of glue repair is to make up for the defects, which are either natural wood defects or to cover up the mistakes in processing. Defects are filled with the same wood flour and covered with glue. This glue repair is illuminated by purple light. In fact, most manufacturers are not malicious, whether it is grinding glue or mending glue. First, they want to make their babies more perfect and attract consumers' attention. Second, wood is a natural product, and it will inevitably have defects, so it needs to be remedied. Therefore, mutual understanding is the most important thing. There is nothing wrong with pursuing perfection. It is wrong to go too far and deliberately conceal deception.