A.Please use soft cotton cloth to clean the stain place on surface. If the stain is serious, you need to use toothpaste or furniture special cleaner to do the 1 st cleaning then use the soft cotton cloth for the 2 nd cleaning. B.Do not do often friction for edges and corners that will make the paint fall off. C.Do not put the neutral reagent /wet cloth on the door surface long time that will cause some damage ( like color changed or covering peeling off). D.Please screw up the hinges or lock if any loose.For any noise of hinges , do the oil filling. For inflexible lock opening, please fill some lead Lead powder inside the hole of key hole, not oil. E.If happen partial stripping of door edge sealing , please press it stabled by the iron but under the iron must with dry cloth. If you are looking for quality windows and doors, curtain wall, wood doors, contact us or send us your requirement, we will offer you the professional advice.