Shanghai Shuangxiong Plastic Product Making Co.,ltd. (SSPPMC) A special security product manufacture in shanghai, began its operations in 2007 with the introduction of plastic security seals for transporting in China . we are not the intermediary trader . Our customers are in the word wide, our products are container bolt seals , cable seals , pull tight seals , metal strip seals , twist seals ,padlock seals and so on . We offer OEM and DEM service in the worldwide. We support a worldwide network of established distributors , agents and customers with quality products ,timely delivery and excellent service . We will offer you the professional consultation and technical support to help you make wise choose.