... .OEM services of coil spring 2.Custom made for coil spring 3.Prompt delivery 4.Qualified machining & finishing Ningbo Jiahui ... ., Ltd is specializing in manufacturing metal parts which are used for Auto parts, Locomotive parts, machinery parts, tool parts, furniture parts ... turning lathe, milling, drilling and Tap etc. which are used for Machining rough castings or directly from round bar. The CNC ...