Product Name: Exhibition Equipment (Knuckle Joint) Model NO.: Knuckle Joint Style: for Exhibition Booth Type: for Exhibition Booth Material: metal Feature: Recycled Build Method: Connect Folded: Unfolded Trademark: Chuanggao Transport Package: Plywood Crates Specification: Standard Origin: China HS Code: 76109000 Product Description Description:These all knuckle joints used for making showcase.The surface is can be chromium,will make the booth nobler.