Digestion and absorption of foreign advanced technology and technology of a new developed plastic extrusion production line of Lizhi company, with the company for many years the board (film) material equipment manufacturing technology and experience, the machine has high degree of automation control, stable output, uniform plasticization and thickness control precision. It has the advantages of high yield, the service life of the equipment as for PP/PE/PS materials such as single or double, three layer composite conductive sheet, and anti-static sheet production. Products used as packaging materials widely.