What is the anticorrosion effect of graphene zinc? Which is better, graphene and zinc?

There are many large-scale engineering cases of graphene-zinc steel structure corrosion protection, and the technology is relatively mature. Graphene-zinc of East China Zinc Shield is used for corrosion protection of steel structure in our factory. Long-term experimental tests show that it can resist salt spray for more than 4500h, and the coating rate is high, which is more than 15% less than that of 80% zinc-rich coating. It is cost-effective, less difficult to construct, and workers can finish spraying in a few days, with mature matching, high adhesion and stable coating rate.