Weifang Zhong Yun Machinery Co., Ltd is a key enterprise producing plastic machinery, with twenty years’ experience on plastic machinery research and manufacturing. It professionally manufactures high-performance and high-quality extrusion production lines. It has been granted many “National Grade Science and Technology Achievements Holding Unit”, “Key Popularization Unit Building Materials Equipment” appointed by Construction Department, “Provincial Grade High and New Technique Enterprise” and “Spark Demonstration Unit” by “Shandong Province Science and Technology Department”.