... plastic length:3-10cm head dia:8-20mm competitive price heat preservation nail material:steel, aluminum, tinplate and plastic.length:20 ... widely used in housing insulation, has anti-aging, anti-sudden change in temperature, corrosion, cold and heat; high capacity, high ... easy to deformation, moistureproof, snubber, absorb noise and sound insulation Heat Preservation Nail (manufacturer and exporter)