Expansion nails are composed of screws, expansion tubes and other components. In terms of material, they are divided into metal expansion nails and plastic expansion nails, and in terms of installation methods, they are divided into screw-in expansion nails and knock-type expansion nails.
Expansion nails are composed of screws, expansion tubes and other components. In terms of material, they are divided into metal expansion nails and plastic expansion nails, and in terms of installation methods, they are divided into screw-in expansion nails and knock-type expansion nails.
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