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          Quality

          Control items

          Control characters

          Standard

          Appearance control

          Board surface
          Finished aperture and attribute
          Thickness
          Trace width/spce
          Soldermask and legend
          Dimensions and related machining
          Surface treatment

          IPC-A-600G or customer-related technical indicators

          Physical testing

          Coating thickness and microsection
          (Cu in holes,copper chickness,Tin,Gold,Nickel thickness,etc)
          Thermal stress test
          Solderability test
          Voltage-resistance and Insulation test
          Characteristic impedance test

          IPC-TM-650 or IPC-6012
          Or customer standard

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