... , used for supermarket, store, drugstores. 1) Compatible with all EM systems, such as 3M, Dialoc, Certus, Checkpoint, Kejings.2) Cobalt-based ... Good Concealment.6) Use Conveniently. Our products are fully compatible with 3M, Dialoc, Knogo, Checkpoint system and ect. We can make ... all of our products with customer requirements like length, style, color and packaging type. ...