The apparent density,Pervious to light,Rate of haze,Yellow index whiteness,Swelling ratio, Water content, acid value, hardness, etc
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Product recall notification information update!
China's RoHS will be upgraded in an all-round way, and it is proposed to increase the requirements f
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Spring tea meeting and award ceremony of "Guangdong energy standard testing" in 2022
Annex IV of the EU RoHS Directive intends to add 3 new exemptions