ShanDong YuTong seal company was established in 2008,located in ShanDong Provice of China,specialized in manufacturing Lead Seal,Container Bolt seal, cable seal,Plastic seal,Meter Seal,padlock seal and other high security seals,widely used in all kinds of transportation industry. With more than 10 years developing,we are becoming the famous security seal manufacture in China,owning 10000 sqm of standard building,with more than 100 production equipment and over 300 staffs,we have our own engineer team keep design and research new security seals to meet requirement of Clients,our all products strictly made according to the standard of ISO/PAS17712.Our products are widely exported to more than 30 countries,obtained the high praise form the customer,welcome to visit our factory and have one chance work with you!