1. Glass: Wood Crates/Plywood; If wood case, Fumigation Treatment 2. Stainless Steel/Mild Steel: Carton+Plywood 3. Accept Customized Package The shop drawing and 3D drawing of the stair case are provided.The sales will tell you the package measurement and the shipping cost by air or by sea. Before the shipment, the engineer team will assemble the Staircase wood or the railings. Sure we also mark them and the assembled photos. 4.Stairs With Wooden Treads is pack with foam film.