... and functional requirements4)Any special packing or other requirements About the material:1). Carbon Steel, Stainless Steel, Copper, Phosphor Bronze, Beryllium ... , DHL or as your request after making payment.2). A Tracking Number will be sent to you via e-mail after ... order has been shipped.3). If you do not receive the Tracking Number email within 7 business days of confirming payment, please ...