Brand WK-881 is a TPA-based polyethylene terephthalate (PET) copolymer resin developed for bottle-grade applications. With its high molecular weight, this polymer is widely used to produce containers, including packaging bottles for carbonated beverages like cola and large 3-gallon bottles.

Bottles produced from WK-881 exhibit excellent optical clarity and gloss, along with strong barrier properties against oxygen, carbon dioxide, and moisture. Additionally, the resin helps prevent bottle cracking during transportation, ensuring durability and product integrity.