... metal fragments (iron, copper, aluminum, lead, tin, stainless steel, etc.) inside raw materials, such as aquaculture, fishery, dried ... objects (iron, copper, aluminum, lead, tin, stainless steel, etc.).(2) High sensitivity. 10 levels of adjustable sensitivity ... , smooth running, long life performance.(9) Stainless steel frame construction and search coil make the equipment anticorrosive and durable ...