This type of full Duplex (FDX-B) Electronic tag is designed mainly for sheep and pig, also good to large animal. The FDX-B technology is ideally suitable to the harsh environments,i.e. electrical interference, moisture, or large metal surface. All tags can be identified with entire 15 digit numeric ID, a laser numbering and a bar code on demand. The manufactured eartag is developed with the most exhaustive ISO 9001:2000 quality controls.