Shanghai Xinfan Container Fittings Co., Ltd is one of the largest manufacturers of C-TPAT High Security Seals and Indicative Seals from China. Why Xinfan Seals&＃039; your first choice? 1) Reliable production capacity (40, 000M2 workshop in Shanghai and annual production 100, 000, 000 pieces) and timely delivery guaranteed 2) Our history involved in security seal production tracing back to 25 year ago from China?? wellkown City of Hardware Wenzhou, independant R&D capability 3) ISO 9001:2008 certified 4) Strict quality control over the whole production process 5) ISO PAS 17712 level certified(Our TSSS-S Level certified seals are tested by US laboratories) 6) GSV (Global Security Verification Program, equivalent of C-TPAT, AEO, PIP and the WCO framework) 7) ISMA membership (We are the first and only Chinese member of International Seal Manufacturers Association) 8) Competitive price 9) Customer-oriented service