Sample "0 to 1 return" as the determination criteria, emphasizing that the existence of non-performing products are not allowed.<br>1. The Company applies to the counting normal level VL -IV;<br>2. 100% inspection when the batch is smaller than the sample size;<br>3. Strict inspection in the normal level VL - IV left barrier, the reduction test in the normal level VL - THE right side of the barrier;<br>4. The sampling range is limited to the appearance class inspection.
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