Polyester fiberglass screw: A screw processed by laminating and curing unsaturated polyester resin and fiberglass fabric. And after X-ray inspection, it is sealed and supplied.

Nylon screw: is made of nylon 12 insulation sheet material, which is processed into a screw by a special machine. And after X-ray inspection, it is sealed and supplied.

Nylon nuts: are nuts made of nylon 12 insulation board that have been carved, milled, and threaded into shape. And after X-ray inspection, it is sealed and supplied.