Guy told me that the demand for high-yield debt is a function of the improving economy, declining returns for the debt market, and the fact that the weakest issuers were effectively shaken out by the last recession.

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Ultimately the pricing is a function of the demand and value that customers have for that service.

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But the spread between the price of the raw material and the price of the finished good is a function of the supply of ethylene-making capacity and the demand for ethylene.

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