Liaoning Chengwei Plastic Profiles Co., Ltd. is a large professional manufacturer in building materials field. With more than 1,200 employees, the company can produce 700,000 tons of UPVC profiles yearly. The company introduced 373 plastic profile production lines from Germany and Austria. With the advanced UPVC profile production techniques, Chengwei Profiles can produce various high quality profiles, plates and pipes according to your requirements. The company imported material mixing system from Coperion GmbH of Germany and water chiller and air compressor from York Company of U.S. Batching, mixing and extruding are all controlled by computer. The full automatic control ensures the safety and stability of the production.Liaoning Chengwei is a designated production enterprise of China Construction Industry Association. In the year of 2000, the company was approved ISO9002 quality management systems certification by China Quality Mark Certification Group (CQM) . Then the company passed ISO9001 quality management systems certification and ISO14001 environmental management systems certification in 2003. In 2001, Chengwei profiles were rated as "Qualified Good Quality Products" by China Association for Quality Inspection ( CAQI), and the following year the products were awarded as ?National Qualified Products of Stable Quality ? by CAQI. In 2003, the plastic profiles produced by Chengwei were approved as ? National Inspection-free Products?by General Administration of Quality Supervision, Inspection and Quarantine of the People&＃39;s Republic of China (AQSIQ). In 2006, the company passed AAMA certification. In 2008, Liaoning Chengwei was well placed in the ranking of 2008 top ten benefit enterprises of plastic products industry (top three). In 2010, the company was awarded as ?National Verdurization Model Unit? by National Afforestation Environmental Protection Commission.