Our company is located in "China Plactics Screws City"-Dinghai District, Zhoushan City, Zhijiang Province. Its area is 28 Chinese acres, and the existing plant is more than 10, 000 square meters. It is an integrated enterprise bases on professional manufacturer of plastics extruders, granulators, single and double screws, and barrels.Successsfully researched and applied for national patent product "Conical co current double screws extrudew"(patent application No:2005101189153 ) on Dec.30th, 2007. the result of evalution showed: this product has the advantage of good mixture, big shear stress, big squeeze out, low temperature for extruding and well plastics ***** to the existing two kinds of double screws models"Conical different directions double screws extruder" and "parallel co current double screws extruder&＃039;, the output of this product is about one time more, and the power consumption reduces 30%-50%, so that the effert of energy conservation is ***** main performance parameters of this product have already reached the international level.