but high-melt HSPP is completely dependent on imports.

Polypropylene is a thermoplastic resin. The melt index (MI) is one of the most important indicators that affects the processing performance of polypropylene. The larger the MI, the better the melt flow properties of the polypropylene resin. High rigidity polypropylene (HSPP for short) is a type of polypropylene material selected based on its performance characteristics.…