Qingdao Leader Machinery Co., Ltd. is a new technology enterprise, specialized in manufacturing and supplying of new extrusion machineries for plastic pipe, sheet and profile. Since the foundation of our company, we have been dedicated to studying of new products and the application of new technology on the basis of improving tradition. We aim to create the first class enterprise in this field. We have strengthened the management of production, procurement and after-sale service. We have ...