Advantage:
In the process of raising cattle, due to the negligence of the farmers, the cattle ate the iron wire by mistake, and the stomach was scratched, which brought certain losses to the cattle farm. What if a cow eats iron wire by mistake? First, use a Metal Detector to detect whether there is iron wire in the cow's stomach, and then use a Rumen Magnet to take iron or put a Magnetic Trap in the cow's stomach to prevent the wire from stabs the cow's stomach.
