Polymerization of olefins

A polyolefin's a mixture, and two of the catalyst is one or more to any one or more, and a polymerization, preferably solution is added to the initiator to produce a transition metal active polymerization catalyst system; Wherein the catalyst system at least one polymerization catalyst comprises a is bulk is one or iron is selected from. The polyolefin product can includes an additional molecular weight and plurality of molecular weight, crystallinities or a and other aspects with different, wherein the product can be used as moulding resin and wherein the film.