... /keyring/silicone key/metal keyring/promotional gift/fox tail keychain/access control key tag/water proof/laser print keytag/inner code ... S50,S70,SLE4442,SLE4428,SLF5528,Simens ceries,Temic series,AT24C16,AT24C64,AT series,FuDan Series,EM4100,TK4100,etc7)Packaging: 250pcs/box, 20boxes/caton ...