What does hardware include?
1. The concept of "hardware" mainly refers to the general term for the five metal materials: gold, silver, copper, iron, and tin. 2. Hardware is the mother of industry and the foundation of national defense. Hardware material products are usually divided into two categories: large hardware and small hardware. Large hardware refers to steel plates, steel bars, flat iron, universal angle steel, channel steel, I-beam, and various types of steel materials; small hardware refers to building hardware, galvanized iron, locks, iron nails, iron wire, steel wire mesh, wire cutters, household hardware, various tools, etc.
