Our advancement depends over the superior machines, exceptional talents and continually strengthened technology forces for Briefcase, Pressboard Folders , PP Mushroom Holes Ring Binders , L Shape File Folders , We set a strict quality control system. We have return and exchange policy, and you can exchange within 7 days after receive the wigs if it is in new station and we service repairing free for our products. Please feel free to contact us for further information and we will offer you competitive price list then.