... chrome plating; 3 quantity of ball:4 pcs High quality zinc lock cylinder1.Ningbo Junhua machinery co.,ltd is ... Inspection equipmentThree-coordinates measuring machine,Hardness-testing device,spectrum analyzer;MaterialADC 12,a356,A380,YL102,AlSi9Cu3, AlSi12 etc, ... expect for force majeure.)7. Quality control:-------------- Both in-house QC and lab test provided. Test report along with delivery according ...