Qingdao YiTeng Flexitank co.,LTD. A professional manufacturer and exporter of container liners. Our company have always placed quality as our priority. All of the materials, parts that are used in the production of our flexitanks have withstood the test of time and have proven to be excellent in quality. And our company is attaining ISO9001: 2000 certificate , all products are made compliance with FDA, EC, and ICQ regulation.