Nov 12 , 2022
Comparing 355 nm UV DPSS marking and ink coding
Comparing 355 nm UV DPSS marking and ink coding If there is no production date, shelf life and other information on the food packaging bag, do you dare to buy it? Not only that, today, when consumers are generally very concerned about food safety, even the ambiguous information on the packaging bag can easily make people feel that there may be tricks in it, and people can't help but ask if ...
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