Dongying Zhengyi Packaging Co., Ltd. located in Guangrao Economic Development Zone - the hinterland of the Yellow River delta, is a medium-sized company which specialized in the production of paper-plastic composite bags,valve bags,woven bags, PP/PE woven bags and PE blown film bag etc. Company was founded in Feb,2006 with registered capital of RMB 32 million ,designed annual production capacity 60 million pieces.Since its establishment,with introduce advanced equipment, constantly improve technology process, enlarge production scale, attract and train highly qualified technician ,our company established complete quality management system. By adopting scientific formula,using the PP,PE material produced by famous manufacturers, the quality of products always stand at the front of industry. Our company passed ISO9001 certification and ISO14001 certification,and was listed in Qilu Stock Rights Exchange Center on 12th,Dec,2016. (referred to as "Zhengyi", code:100493) In the process of development, our company always keep strong brand awareness and spirit of reform and change, which propels us to meet the challenges and transcend ourselves. In the new stage of China's economic development, we are on the way of keep moving......