C2003 Electricity Plating

After a while, Cheng Jianping looked at Qin Luo and said slowly, "Qin Luo, I have to say you have a good idea. Gold can indeed make up for the lack of stability of materials. But have you ever thought about his strength? "

"Although gold is not the softest metal, it is not much softer than his metal..."

"Forgive me for being blunt