All of these materials come from natural resins except for carbon fiber, a synthetic resin commonly made from polyacrylonitrile.

所有这些材料都来自天然树脂，碳纤维除外，碳纤维是一种通常由聚丙烯腈制成的合成树脂。

Then, they're transported to another facility where they're dried and blended with plant fibers, beechwood grains, and natural resins.

然后，它们被运送到另一个设施，在那里它们被干燥并与植物纤维、山毛榉木颗粒和天然树脂混合。