1.1 Definition:

Metal fittings are metal accessories that connect and combine all kinds of devices, transmission machinery, electrical loads and play a certain protective role in the power system. They play an important role in power transmission and transformation engineering.1.2 Classification: The production license units of power hardware products are divided into malleable cast iron, forging and pressing, aluminum, copper and aluminum, and cast iron.According to the function of the product, it is usually divided into pendant wire clip, tension-resistant wire clip, connection wire clip, connection wire clip, protection wire clip, cable wire clip, equipment wire clip, T-type wire clip, fixed wire clip and other 9 categories, which are used for transmission and transformation projects of various voltage levels.1.3 Standards: There are 11 national standards in effect, such as gb2314-1997 General Technical Conditions for Electric Power Fittings;DL/T756 — 2001 – Suspension Clamp and other industry standards 25, including 7 product manufacturing quality standards.1. The entry threshold of the industry is relatively high, with high investment in fixed assets and more investment in equipment and molds.2. The one-stop production line equipment is equipped with a large amount of capital investment, if there is no relatively large capital, it is difficult to enter the industry.3. With strong state monopoly, the market as a whole has not been fully opened up, and there are many elements of state regulation.For some large projects, bidding requirements are strict, testing.4. Greatly affected by the fluctuation of raw materials.The raw materials of electric power gold fittings include copper, iron, aluminum and plastic, among which the fluctuation of copper price is the most significant. The fluctuation of copper is great, which seriously affects the production and cost control of enterprises.