For the purposes of headings ex 2707, 2713 to 2715, ex 2901, ex 2902 and ex 3403, simple operations, such as cleaning, decanting, desalting, water-separation, filtering, colouring, marking, obtaining a sulphur-content as a result of mixing products with different sulphur-contents, or any combination of these operations or like operations, do not confer origin.
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