The professional Insulation Ladders Supplier reminds that the ground freezes in winter, especially in the winter in northern China. The temperature gradually changes from cold to warm. The cold land is under the sun, the temperature is rising, and the sun-heated ground is close to the ground. The air is gradually warming, but the air in the upper layer is still cold. In this way, the cold air in the upper layer should be lowered, the warm air in the lower layer should rise, and the air convection becomes more and more fierce, forming a strong wind. Because the low pressure on the ground moves very fast, the wind speed is large, making the spring a season with a large stroke and a strong wind. So when using either an Insulation Ladders or an Aluminum Ladder. We must use it correctly, pay attention to safety.