... ,525,525H,530,530H,6302)Colors available:natural,yellow,blue,black3)Materials:carbon steel,nickel-plated,zinc plated,copper platedSPECIFICATION: PACKING ... Report Date Test report Jinhua Institute of Calibration and Testing for Quality and Technical Supervision ZBD( C )-80-014-2010 ... 05/20 Test report Jinhua Institute of Calibration and Testing for Quality and Technical Supervision ZBD( C )-80-011-2009 ...