1. Ensure that all rivets, bolts, nuts and moving parts are tightly connected, the ladder column and ladder are firm and reliable, the extension snap ring is in good working condition
2. The ladder shall be kept clean and free of grease, oil stain, wet paint, mud, snow and other slippery substances
3. The operator's shoes shall be kept clean and leather soled shoes are prohibited
Precaution
1. The ladder shall be placed on a firm and stable ground, and shall not be placed on ice, snow or slippery ground surface without anti-skid and fixed equipment
2. It is forbidden to use ladders when you are tired, taking drugs, drinking or having physical obstacles
3. During operation, do not stand on the ladder within 1m from the top of the ladder, always keep the safety protection height of 1m, and do not climb over the highest support point on the top
4. It is forbidden to exceed the maximum bearing mass indicated during operation
5. It is forbidden to use ladders in strong wind
6. The metal ladder shall be conductive and avoid being close to the live place
7. When climbing, people face the ladder, grasp it firmly with both hands, and keep the center of gravity in the center of the two ladder columns
8. Do not put your hands over your head during operation to avoid losing balance and danger
9. It is forbidden to directly cross from one side of the ladder to the other