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thermochromic ink
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Thermochromic Ink :It is irreversible ink ,when the degree up to 60 degree ,the colorless will become color . this process is irreversible . Feature ...
2024-04-15 19:05:34
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Thermochromic Ink :It is irreversible ink ,when the degree up to 70 degree ,the colorless will become color . this process is irreversible . Feature ...
2024-04-15 19:05:34
|