What material is the head of the 99-meter bronze statue of Jiuhuashan?

The bronze statue of Jiuhuashan Open-air Bodhisattva is 76 meters high and the Lotus Tower is 99 meters high. The entire bronze statue and pedestal are 155 meters high, making it one of the largest and tallest Buddha statues in the world. The Bodhisattva Ksitigarbha is a bhikkhu. His right hand is Zhang Xi and his left hand is Mani Baozhu. Facing the northwest, dignified and kind, to show "showing all beings, making the country prosperous and the people safe."

The total area of the Buddha's body is 12000 square meters, all of which are cast by Luoyang Copper Processing Group's patented corrosion-resistant sub-gold copper (commonly known as 18K alloy or imitation gold copper). It is welded by 2390 pieces of copper castings, weighing about 1000 tons.