... international trading business by ourselves. 3.We cooperated with Italy RGP International Company from the year 2006 ... Steel BallMaterialAISI420Size2.0 mmGradeG500Hardness ( HRC)HRC58-65ApplicationBicycle, bearing, pulley, slide, handcraft, shelf, luggage, hardware, grinding mediaStandardGB/ ... packing,plastic/tin box packing1, 25kg/carton with steel pallet packing2,25kg/carton without steel pallet ...