New house will have to turn the key, check room attention to what the problem?
the use of the head of the magnet can determine the water pipe is copper or iron pipe (copper cost is high, can be safe to use 50 years, copper can inhibit the growth of fine, healthy, low quality iron tube, easy rust corrosion, Durable) the use of the head of the magnet can determine whether the aluminum alloy window liner lining (aluminum alloy hardness is not high, easy to deformation, aluminum alloy window frame must be lining the steel plate) in a narrow area, Entrance and other places, check whether there are iron and nails and other construction waste residue
used to detect the hardcover room hair room wall, wall tiles, floor tiles, floor, whether to have empty drums
