| http://www.w3.org/ns/prov#value | - The Chemical segment is a manufacturer of polyvinyl chloride (PVC) resins, chlorine and caustic soda-key building blocks for a variety of indispensable products such as plastics, pharmaceuticals and water treatment chemicals and other products include caustic potash, chlorinated organics, sodium silicates, chlorinated isocyanurates and calcium chloridemanufactures and markets basic chemicals and v
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