Salvage magnets are strong magnets that specially used to salvage metal things from river or marine. At the beginning, nude neodymium magnets with holes were used as salvage magnets. But the magnet material is fragile, then people think out ways with magnetic circuit design that not only prorect the magnets from damage but also strength the magnetic force, the products are known as pot magnets or channel magnets. With strong magnetic force, the magnetic assembly often used to search metal things under deep water. So that salvage magnets also called as search magnets and fishing magnets.