... ,2.the quantity.High frequency transformer(EE,EI,ETD,PQ,RM,EF,ETC)Full product range (custom made):1) Air core ... ) Pot inductors11) Power chokes or inductors12) RF chokes or inductors13) RM inductors14) R-type transformers15) SMD inductors (molded chip, surface mounted ... filters20) All kinds of transformers Medical equipment, UPS power transformer series