hand held metal detector: 1) Special designed for moon cake production and food industry 2) With high sensitivity to ferrous and non-ferrous materials 3) The sensitivity to ferrous and non-ferrous can be adjusted respectively 4) High performance products with competitive prices 5) Handy and removable airframe is convenient to wash and clean 6) Special designs available according to customers' production line 7) Applications: special designed for detecting metal impurities in moon cakes, as well as for food industry, pharmaceutical, food additive, condiment and health care things