Screw, key point to your surprise.

For a long time, fasteners have been the weak link of steel structure building, and it is an important but easily overlooked details.

The problem is not design or performance, but time. Time will cause reduction of strength and corrosion, then the normal fasteners break.

What is the solution?

Jinggang chooses Zinc-Tin alloy mechanical coating screw. It is with design patent as well as excellent anti-rust properties in a long term.