Hardware: refers to gold, silver, copper, iron and tin, and generally refers to metals.

Ci Hai contains:

Hardware: refers to gold, silver, copper, iron and tin, and is often used as a general term for metal or copper-iron products.

Ci Hai contains:

Hardware: Five kinds of metals. "The Spring and Autumn Annals of Wu Yue" and "Biography of He Lu": "It is said that Wang Yuan of Yue often makes Ou Yezi use five swords ... one Zhan Lu and one British hardware are the essence of the sun." According to the note of "Gold, Knife, Turtle and Shell" in Hanshu Food Records, "Gold is five-color gold, yellow is gold, white is silver, red is copper, green is lead, and black is iron." Later, gold, silver, copper, iron and tin were commonly known as hardware.

What is hardware?

Hardware refers to gold, silver, copper, iron and tin, and hardware is the mother of industry; The products of national defense foundation-hardware materials are usually divided into two categories: big hardware and small hardware. Big hardware refers to steel plate, steel bar, flat iron, universal angle steel, channel steel, I-beam and all kinds of steel products, while small hardware refers to building hardware, iron sheet, locking nails, iron wire, wire mesh, wire scissors, household hardware, various tools and so on. As far as the nature and use of hardware are concerned, it should be divided into eight categories: iron and steel materials, non-ferrous metal materials, mechanical parts, transmission equipment, auxiliary tools, working tools, building hardware and household hardware.

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