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Bags of decolorizing test how to operate?

Author:Bags wholesale    Time:14/08/27    Click:
    Food packaging bags of decoloring experiment is to observe the soaking liquid may not have a color sample, and have a buffet with oil, solvent such as ethanol of the surface of the cotton in the packaging material or container to wipe, may not have on cotton color to test the sample whether decoloring.

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