20 Display apparatus, namely, portable display stands; furniture, namely, display units; display stands; display boards; modular display systems comprised of modular display stands; portable display stands and display boards; photo frames for display stands and display boards; structural parts for display stands and display boards, namely, display frames and non-metal beams; non-metal signboard holders, non-metal clips, and non-metal clamps for assembly into display stands and display boards; collapsible display stands and display boards; dismountable display stands and display boards; cases specially adapted for display stands, display boards and display materials, namely, metal display stands; metal display boards; portable metal display stands and metal display boards; structural parts for display stands and display boards, namely, frames for display stands and display boards; display frames for memorabilia; picture frames for assembly into display stands and display boards; collapsible display stands and display boards; dismountable display stands and display boards; parts and fittings for all the aforesaid goods, namely, non-metal shelf brackets and non-metal screws; display apparatus, namely, portable display stands; [ modular display systems comprised of modular display stands, display panels, metal beams, metal signboard holders, metal clips, metal tubes, metal clamps and metal linking rods for assembly into display stands and display boards; ] metal cases specially adapted for display materials, namely, for portable display stands; display assemblies composed primarily of fiberglass comprising brackets, clamps, poles, and plastic banners for exterior and interior use and structural parts thereof