? This product is a polyolefin as the basic raw material, combined with high elastomers and additives, using scientific formula made. Then through the action of high-energy electrons produced by an electron beam accelerator, and the polymer molecular structure changes from the original linear macromolecules become insoluble three dimensional network structure, so that a material having heat resistance, stress crack resistance, heat aging and chemical resistance. By stretching the coating equipment, covered with excellent performance EVA hot melt adhesive (glue thick about 0.8mm), while stretching the PE sheet (thickness 1.2 / 1.4mm), so that the contraction rate of over 25%. Uses: The products are mainly used for buried steel pipeline. Services in the field of natural gas, gas, oil, heat pipes and other suitable corrosion in the pipeline. ? Features: contraction speed, good water resistance, corrosion resistance, easy to transport, quick construction. But not as electric hot-melt sets (with) better welding effect.