LEZ is equipped with multiple microcomputer-controlled single-screw extrusion molding production lines and high-precision testing instruments, and specializes in the design and manufacture of various precision plastic profiles and pipe extrusion molding and extrusion (extrusion) molding molds,at the same time, in order to ensure the continuous improvement of product quality, a complete product testing laboratory is equipped, including optical integrating sphere, 2D/3D measuring instrument, anti-UV testing equipment, constant temperature and humidity testing, high temperature testing, 3D printing technology, etc.