* A Sept. 1, Page 3 story should not have said that North American Technologies Group Inc. expanded its Houston plant last year. The company made improvements to its existing line, but did not expand.
* A graphic on Page 3 of the Sept. 1 issue should have said that Clariant Masterbatches' North American headquarters is in Holden, Mass. A listing of compounders on Page 14 should have listed this address and telephone number: Clariant Performance Plastics, 3011 Millington Road, Millington, MD 21651. (410) 928-3083.
* A story on Page 3 of the Sept. 1 issue should have said that Berwind Group entered the hot-runner business when it bought Kona Corp. in 1992 and formed Dynisco HotRunners in 1996 after buying Eurotool Operations BV.