How much does it cost per cubic meter to weld a billboard frame?

⒈What type of welding machine does it cost to weld billboards?
It’s about 400 yuan. I analyzed what you mean. You should buy a welding machine for welding door billboards, which is also used for welding square pipes. Just buy the 310 model.
Give me some points. I lost every penny. I often ask people questions, so I’ve given them all.

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