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DFDVX135 0 إعلانات
In a world that is grappling with the issue of how to reduce the quantity of plastic waste it produces, paper straws have an important role to play. They provide an eco-friendly alternative to the disposable plastic straw, 25.3 billion of which are used…
DFDVX134 0 إعلانات
Monomer, a molecule of any of a class of compounds, mostly organic, that can react with other molecules to form very large molecules, or polymers. A standardized extract is created by "pulling out" (extracting) specific compounds from a…
