Who knows the progress of Cangzhou Dahua’s MDI project?

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According to the official website of the listed company Cangzhou Dahua, there are plans to implement an MDI project; however, there seems to be no actual progress. The stocks I bought showed no signs of improvement; the PC project managed to trigger a brief surge, but then fizzled out. The MDI process shouldn’t be difficult; once the composition of the main raw material, MDA, is clearly analyzed, it will be easier to address any subsequent issues. The raw material MDA is composed of multiple substances; diamines with 2 benzene rings, diamines with 3 benzene rings, diamines with 4 benzene rings, diamines with 5 benzene rings, and those with 7 benzene rings are also presumed to exist. It depends on the proportion of composition of these main raw materials. Together with other impurities, they make up 100% of this substance that needs to be identified. The solvent is either dichlorobenzene or chlorobenzene; there isn’t much difference ； It’s a common trick to add a small amount of polymerization inhibitor to the raw materials—at most 50 ppm; if you’re not confident, you can use 100 ppm. There are quite a few references in chemistry textbooks regarding the types of polymerization inhibitors used for polyurethanes; they serve to prevent chemical reactions between groups such as NCONH2 during the formation of MDI. The reaction has been successfully carried out. Subsequently, by combining various isocyanates with different numbers of benzene rings—both large and small in quantity—those that can be separated through chemical or physical means are separated; for those that cannot be separated, their range is determined, and the NCO content is calculated. This way, black-component polymeric MDI materials for shoe soles can be produced. Similarly, plastic elastic running tracks, insulating materials for refrigerators, etc., can also be made. Higher-purity leather that doesn’t retain its value over time, as well as various decent-quality adhesives, become feasible products. If production volumes are extremely high, it would be possible to ban the production of those harmful formaldehyde-based adhesives whose price is merely around 3,700 yuan per unit. Such products could win scientific and technological awards and offer numerous opportunities to make valuable contributions.