This is highly automatic expanding and riveting machine with CE Certificate .
It can be apply for the straight ladders, combination ladders, triple extension ladder, double extension ladder, windmill system . long ladders .
The rungs distance and width distance can both adjustable .
When compared with the 2 in 1 expanding and riveting machine, it have one more function : inserting the tubes .
It’s easy to handle the machines. Safety and stable .
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