{HEAD ~ The catalyst components} utilized in carrying out {TAIL ~ the invention} involve a transition metal component, an electron donor component, and a co catalyst component which are sequentially mixed together in the course of formulating the Ziegler type catalyst to be charged to an olefin polymerization reactor 
{ HEAD ~ The catalyst components } utilized in carrying out { TAIL ~ the invention } involve a transition metal component , an electron donor component , and a co catalyst component which are sequentially mixed together in the course of formulating the Ziegler type catalyst to be charged to an olefin polymerization reactor
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