Retrieving "Petrochemicals" from the archives

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1. Chemical Product

   Linked via "Petrochemicals"

   | Classification | Typical State | Primary Industrial Sector | Defining Characteristic |
   | :--- | :--- | :--- | :--- |
   | Bulk Chemicals | Liquid or Solid | Petrochemicals, Fertilizers | High volume, low unit cost; purity often $\ge 98\%$ |
   | Specialty Chemicals | Solid, Liquid, Gas | Electronics, Polymers | Intermediate volume; tailored functionality (e.g., catalytic activity) |
   | [Fine Chemicals](/entries/…