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        A visual check on the quality of components, materials, and accessories at the beginning of against client's specifications and/or reference samples.The Pre-production inspection thus permits timely corrections and improvements before the mass production, is initiated , any non-conformity is immediately reported so as to avoid delay in shipment .
         In general, we will check the following aspects for PPI:
        · Check all quantity and quality issues of raw materials and main components
        · Evaluate the production capability and equipment in the factory
        · Semi-finished product check 
        · Finished product check
        · Check the accuracy of production facilities and equipment