HOUSTON, July 27 /PRNewswire/ -- U.S. ethylene prices fell in July, with the August New York Mercantile Exchange's (NYMEX) cleared ethylene settling and expiring at $0.3225 per pound. The contract, which began trading in July 2009, settled for July last month at $0.34 per pound. Ethylene trades in 100,000-pound lots per contract on the NYMEX's Clearport system and is a building block chemical...
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