Drawing Format: STEP, STP, STL, DWG, DXF, IGS, X_T, AI, PDF. Packages:Bubble Bag, Polybag, Pearl cotton, Carton box, Wooden case/Pallet or as Requested. Shipping: Shipped by sea, air or express(EMS,UPS,DHL,TNT, FedEx.etc), please confirm with us before placing orders. Delivery Lead time: 7-15 days for small quantity and 30 days for large volume. Surface treatment: Natural, Anodizi... https://www.sheetmetalxc.com/sheetmetalfabricationcompaniesinchina.html