Low smoke halogen-free wire and cable and ordinary wire and cable each have their own advantages and disadvantages:

Advantages of low smoke and halogen-free wires and cables:
1. Higher safety: Low smoke halogen-free cables produce almost no smoke or toxic gases during combustion, resulting in less damage to personnel and equipment. Its high flame retardancy can also effectively prevent the spread of flames and reduce the risk of fire.
2. Better environmental friendliness: Due to the absence of halogens and other harmful heavy metals, low smoke halogen-free cables will not pollute soil and water sources during use, meeting environmental requirements.
3. Long service life: Low smoke halogen-free cables are made of special materials, which have good weather resistance and corrosion resistance, and have a relatively long service life.

Disadvantages of low smoke and halogen-free wires and cables:
1. High price: Due to the high raw material and technical costs of low smoke halogen-free cables, their prices are usually higher than ordinary wires and cables.
2. Limited popularity: Although low smoke halogen-free cables have advantages in safety, environmental protection, and other aspects, their popularity is relatively limited due to their high price and the fact that ordinary wires and cables can still meet usage needs in certain situations.

Advantages of ordinary wires and cables:
1. Low price: Ordinary wires and cables are made of conventional materials, which have lower costs and therefore relatively lower prices.
2. Widely used: Ordinary wires and cables are widely used in electrical systems, meeting the needs of most conventional occasions.

Disadvantages of ordinary wires and cables:
1. Relatively low safety: Ordinary wires and cables may release toxic gases and a large amount of smoke during combustion, causing significant damage to personnel and equipment. Its flame retardancy may not be as good as low smoke halogen-free cables.
2. Poor environmental friendliness: Ordinary wires and cables may contain halogens and other harmful heavy metals, which may cause pollution to soil and water sources during use.

In summary, low smoke halogen-free wire and cable and ordinary wire and cable each have their own advantages and disadvantages. When choosing, comprehensive consideration should be given to specific application environments, safety requirements, environmental protection requirements, and economic costs.