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Gabion mesh has specific requirements for filled stone materials： 1. Hard, weather-resistant and not easy to break 2. No soil, impurities or weathering layers 3. Best stone size: 1.5–2 times of mesh 4. Common stones: pebbles, granite, crushed stone 5. Filled tightly without big gaps Stone quality directly affects stability and service life.

Concrete walls are rigid but expensive, slow, impermeable, easy to crack and not ecological. Gabion walls are flexible, permeable, earthquake resistant, cheap, fast, ecological and greenable. Comparison: Choose gabion for ecology, low cost and fast construction. Choose concrete for rigid building walls. For hydraulic and slope projects, gabion is much better.

Gabion service life depends on material: • General galvanized: 5–10 years • Hot-dip galvanized: 10–20 years • Galfan: 20–50 years • Galfan + PVC coated: over 50 years Factors affecting life: environment, humidity, pH value, water flow, UV, installation quality. Good environment and standard installation can extend service life.