How should the environmental grade of panels be verified?

The recommended order of verification is "documents first, then the physical product": for documents, check whether the grade stated on the quotation matches the panel name; for the physical product, check whether the marking on the panel surface is consistent with the edge banding. A higher grade is not necessarily more suitable; it should also match the usage space and budget. For spaces where people stay for long periods, such as children's rooms, the grade can be appropriately raised.