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In the consideration of the quality level of the separation. We use criteria to consider as follows.1. Product grade a lid not found any fault in a high quality level.1. Considering from the eyes, if can see a clear defect found a flaw, just a little.Which can be sold to other.3. Defect is found clearly. Affecting the seepage of the products and contamination. Or the defect is beautiful cannot sell.
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