January 29th News Recently, Sinopec's Ningbo Zhenhai Refining and Chemical successfully produced qualified 4-methyl-1-pentene for the first time in its propylene dimerization pilot plant, with an average purity exceeding 98%. This achievement breaks Japan's monopoly and overcomes the "bottleneck" technology for the core raw material of ECMO membrane materials. Chempricehub Analysis on Polypropylene, Bull-Bear Score: 1.5 The article reports that Sinopec has successfully produced high-purity 4-methyl-1-pentene, breaking Japan's monopoly. This product, derived from propylene, serves as the core raw material for ECMO membrane materials. This technological breakthrough is expected to boost domestic demand for propylene (as a raw material), benefiting the spot price of polypropylene, as potential tightness in propylene supply may translate into stronger cost support for polypropylene. Combined with polypropylene futures data (e.g., the 2605 contract closing at 6,870 yuan/ton, up 65 yuan, with open interest increasing by 13,300 lots), market sentiment is optimistic. This event may further drive futures prices upward, reflected in the increase in long positions and the upward price trend. Score: 1.5 (between moderately bullish and significantly bullish), as domestic production reduces import dependency, though the potential demand growth is significant, it requires time to materialize.