The world's polyethylene and polypropylene are produced via both heterogeneously via Ziegler–Natta catalysis and homogeneously, e.g., via constrained geometry catalysts.
Polietilena dan polipropilena dunia dihasilkan secara heterogen melalui katalis Ziegler–Natta dan secara homogen, misalnya, melalui katalis geometri terbatas.