Precautions before using the ladder:
1. Ensure that all rivets, bolt and nut and moving parts are tightly connected, and stair column are firm and reliable with steps, what preparations should be made before using the ladder

The extension circlip and hinge are in good working condition.
2. Keep the ladder clean, free of grease, oil, wet paint, mud, snow and other slippery substances
3. The operator's shoes should be kept clean, and it is forbidden to wear leather shoes

What problems should be paid attention to when using the ladder

1. When you are tired and take drugs, drink alcohol or have physical disorders, it is forbidden to use ladders.
2. The ladder should be placed on a firm and stable ground, and it is forbidden to be placed on the ground without skid resistance and fixed setting. Ice, snow or slippery surface

3. It is forbidden to exceed the marked load-bearing quality during operation.
4. It is forbidden to use ladders in strong winds.
5. Metal ladders conduct electricity to avoid being close to charged places
6. When climbing, people face the ladder, hold them firmly with both hands, and keep the center of gravity in the center of two stair column

7. Do not exceed the top of your head during work to avoid losing balance and danger (figure 5)

8. It is forbidden to cross directly from one side of the ladder to the other side.

Ladder maintenance and repair

1. Clean the ladder regularly to avoid some chemicals corroding the surface of the ladder. Check the connection parts regularly and fill in lubricating oil if necessary.
2. If the ladder material is bent, broken or the connector cannot work properly, be sure to contact the manufacturer for professional maintenance.