W.R. Grace & Co. (NYSE: GRA), which has been in bankruptcy protection since 2001, has completed its purchase of Noblestar Catalysts Co. Ltd.’s assets for an undisclosed amount.

Noblestar, based in Qingdao, China, manufactures fluid-catalytic cracking catalysts, catalyst intermediates and related products used by the petroleum refining industry. The target had sales of about $108 million in 2011.

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