... , etc Mountain bike pedal Precision CNC machining services for customized products CNC machining MaterialSteel, Zinc, ... 40cr, 38crsi, etc.Surface treatmentNickel plating, zinc coating, chrome plating, and oxidation, Polishing, chrome plating, phosphating etcCNC machining Tolerance+/-0. ... , die castingQC controlIQC Incoming quality control, IPQC In-process quality control, Outgoing quality control. 100% ...