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Plastic Expansion Insulation Nails
There are three parts of the plastic expansion insulation nails,
1. Pipe made by polypropylene polyamide low-pressure polyethylene .
2. the screws inside the pipe.
3.polypropylene disk(used for screw cover the heated board)
The length of the nails are according to the thickness of the heated board.
A-Type anchor bolt expansion screw
