What is the most famous industry in Zhaoqing?

According to Nanfang Daily, metal processing is the largest industry in Zhaoqing. There are more than 300 metal processing enterprises above designated size in the city with an annual output value of nearly 80 billion yuan. Enterprises with large output value include Wang Hong Metal, Zhongya Aluminum, Asian Aluminum Factory, Dazheng Aluminum, Guo Yao Aluminum, Xindaming Aluminum, Jinhong Metal Aluminum, Gordon Aluminum, Jingtong Metal, Honda Metal, Huajin Metal and Jintian Copper.