... caf, supermarket, cinema,ticketing, access control, electronic shelf management, animal tag, keyfob,etc. Chip Infor: 125Khz:EM4100,TK4100,EM4102,EM4001,T5577 ... the informationwith you before placing and manufacture order.Q3:How do you guarantee the quality?A3:We will provide free samples ... with 100%.Q5:What about the invalidity,if the products do not work?A5:The average breakage rate in past decades has ...