1.EM Security System for Library 2.Use:Bookstore,pharmacy shop ... .Weight:13kg/pc EM Library Security System Model: KB-EM3500 Application:1.This system can be used to protect libraries, ... strong hidden, easy operation and low cost.2.This system can be installed in medicine supermarket, putting 6~8cm ... effective to aluminum foil, foil package.3.This system can be installed in clothing store, with hard ...