... Sample 4) OEM OK Yamaha R-S700 Stereo Receiver Shell/ Panel/CasingSpecification:Material: Alluminum Alloy: 1x,2x, 3x, 4x, 5x, 6x, 7x ... ?~~Our expansive product line includes: Aluminum Extrusion/profile, Aluminum Plate, Aluminum Radiator/Heat sink, Aluminum Tubes/Pipes/Bars, Aluminum Sheets, Aluminum Edging/Strips/Casting and kinds ...