How much is Yunnan bonded steel per square meter?

If it is calculated manually from 150 yuan to 300 yuan, the premise is to see what your quality requirements are. Don't believe that I can do a good job in quality even at a low price. This is never possible, you can see it by polishing. For example, steel plates must be punched with very thin lines to increase the surface area of the bonding surface. Then this alone has special requirements for construction workers' tools and millstones. As far as I know, most people don't do this. And the concrete must be polished off by three millimeters until a solid concrete surface is exposed.