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Spec sheets list “random copolymer” and “impact copolymer” as if they were sibling categories of the same thing. They are not. The chain is doing two completely different jobs. In one case ethylene units are scattered singly along a propylene…
China’s commodity polypropylene supply concentrates in three state-owned groups — Sinopec, PetroChina, and CNOOC — plus a handful of second-tier private complexes online since 2020. Roughly three quarters of national PP capacity sits in that set, and China will add…
Specifiers usually arrive at this decision the same way. A supplier sends a quote with a four-character grade code and an MFI number, and the question shifts from “which PP family” to “is this the right family for what I’m…
Most entry-level buyers meet polypropylene the same way. A supplier emails a quote with a producer-specific grade code and a melt-flow number, and the question shifts from generic curiosity about plastic to a specific buying decision. Polypropylene resin looks different…