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1¼Ó  µoªí¤_: 2013-11-26 12:06

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2¼Ó  µoªí¤_: 2013-11-28 08:37

¦^ 38¼Ó(ming8686) ªº©«¤l

I wonder  people are using pigments instead of dyestuffs in printing stamp?

There are many  aspects in uv-resistance behavior  between these two kinds of chemicals for sure.
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3¼Ó  µoªí¤_: 2013-11-28 12:17

¦^ 41¼Ó(ming8686) ªº©«¤l

Understood and thanks a lot.

Frankly ,Although I'm a chemical engineer , I'm not familiar with these chemicals' details at all .

We called pigment ÃC®Æ and dye/dyestuff ¬V®Æ in my career , and their usages are

not the same , the sunlight fastness of pigments is lower.