Precision Alloy contain 6 kinds of functional Materials. Soft magnetic alloys; Permanent magnetic alloys; Elastic alloys; Expansion alloys; Thermo Bimetals; Precision Resistance alloys. Each kind of functional material has different feathers and functions. Especially 1J79(Permalloy), 4J29(Kovar), 4J36(Invar), 4J42(Super Invar) usage widely. Precision alloy is mainly used in the manufacture of electronics, precision instruments and meters, etc.