Recently, Qilu petrochemical plastics factory developed and produced metallocene roll plastic mPE.R334HL special-purpose material new products. It successfully carried out 20 tons of large-scale storage tank molding and processing tests in Zhengzhou, Henan Province. Through experiments, the sample's compressive capacity, deformation, etc. The data indicators are all superior to foreign similar imported products, and can completely replace imported products. The processed products are smooth in appearance, uniform in color, and full in shape. The product has broad market development prospects.