Door parts are the whole parts used when installing doors. They include parts such as for sliding doors, folding doors, shutters, lift-up doors, flat doors and curtain rails. Some parts are easy to use depending on the operating environment, including large hanger rails that can be bent by hand, cushioning materials that can be cut and adjusted with scissors, end snaps that can be fixed with just nuts, etc. Anti-vibration fittings, shafts, conveyors, guide fittings, runners, connecting parts, etc., are components to make the doors operate safely, accurately and securely. In addition, metal fittings operating shutters and lift-up doors, locks suitable for each door shape and door handles are included. It is necessary to select appropriate parts according to the applications such as overlay doors and sliding doors.