aluminium frame: 1.OEM services,R&D speaker part mold 2.15 year experiences of speaker aluminium frame 3.Qualified machining Ningbo Jiahui Machine Parts Co., Ltd is specializing in manufacturing aluminum die casting which is used for Auto parts, locomotive parts, truck parts, motorcycle parts, machinery parts.Our engineers designed mould by PRO/ENGINEER, SOLIDWORKS, UNIGRAPHICS and simulation ...