 COLUMBIA, Md., May 19, 2021 GLOBE NEWSWIRE -- W. R. Grace Co. NYSE:GRA, the leading independent supplier of polyolefin catalyst technology and polypropylene PP process technology, has announced that Engro Corporation Limited Engro has in-principle agreed with W.R. Grace Co. to use its UNIPOL PP Process Technology for the Companys proposed 750KTA PDH-PP plant in Karachi, Pakistan. 