... and used in many applications, such as PCB, IC, LED, especially military and semiconductor2, Features:one/1 single dot Humidity ... Card specifications one single dot : 8%,10%,50% 500pcs/can,three dots: 5%-10%-15%, 5%-10%-60%,10%-20 ... 60%.......any printing, size and RH can be made by customers' needs4, ApplicationPrinted Circuit Board, PCB, LED, SMD LED, IC,electronic packaging , optical equipment ...