... stainless steel pipe,seamless,high quality,precision,smooth internal and external surface,verge also brightly polished1) precision ... length,diameter etc. 4) high level precision,smooth internal and external surface, verge also brightly polished 5) ... manufacturing stainless steel capillary pipe,telescopic antenna,3G antenna,GPRS antenna,CDMA-EDGE antenna,build-in antenna etc. also produce PDA pen ...