Rubber power cord is a type of flexible power connection cable that uses rubber material as the insulation layer and outer sheath. Relying on the excellent elasticity, weather resistance, and mechanical properties of rubber material, it can adapt to frequent bending, mobile operations, and complex harsh environments. It is widely used as a power transmission carrier in the fields of mobile electrical equipment, outdoor engineering, and industrial equipment. Its design and manufacturing follow corresponding national and industry standards, such as the rubber insulated cable series standard with rated voltage of 450/750V and below. The conductor generally adopts high-purity oxygen free copper multi strand twisted structure, the core is soft and the conductivity is stable, the resistance value is compliant, and the temperature rise during long-term power on is controllable. The insulation and sheath layers can be made of different formulas such as natural rubber, chloroprene rubber, ethylene propylene rubber, nitrile rubber, etc. according to the usage scenario: ordinary rubber is flexible and resilient, suitable for conventional mobile scenarios; Chloroprene rubber is resistant to oil, acid and alkali, and tear, suitable for environments with oil stains and mild corrosion; Ethylene propylene rubber is resistant to high and low temperatures, weather aging, and is more suitable for outdoor conditions with large temperature differences. Compared with ordinary plastic sheathed power cords, the core advantages of rubber power cords are flexibility and environmental adaptability. The overall softness and bendability of the wire body make it less prone to cracking or internal core breakage after repeated bending, meeting the needs of frequent equipment movement, dragging, and winding; The temperature resistance range is wider, and it can maintain elasticity and insulation performance for a long time in sub zero and high temperature environments, making it less prone to hardening and brittleness; At the same time, it has excellent wear resistance, impact resistance, and resistance to rain and water erosion. Some specialized models can also achieve special properties such as flame retardancy, oil resistance, and waterproofing. Divided by carrying capacity and usage scenarios, common categories include medium-sized rubber sheathed flexible cables, heavy-duty rubber sheathed flexible cables, welding machine cables, submersible rubber sheathed cables, etc. Medium sized models are mostly used for small power tools, mobile lighting fixtures, and household mobile appliances; The heavy-duty model has a larger wire diameter and higher mechanical strength, suitable for construction equipment, heavy-duty machinery and electrical equipment, and temporary power supply for engineering projects; Specialized special models are customized for special working conditions such as underwater operations, welding equipment, mining tunnels, etc., to meet special protection and current carrying requirements. The number of core wires covers two core, three core, and multi-core, which can match different power supply needs of single-phase, three-phase, and with grounding protection. Qualified rubber power cords have a smooth and even appearance, with even and elastic glue, and no defects such as bubbles, cracks, or damage. The wire body is printed with clear model specifications, rated voltage, implementation standards, and certification marks. Its stable electrical insulation performance and durable physical characteristics make it the preferred power supply accessory for construction sites, agricultural and forestry machinery, ports and docks, outdoor lighting, mobile power tools and other scenarios. It is also a key component for ensuring power supply safety and durability in industrial mobile electricity scenarios.