China National Gold Group Co., Ltd. (hereinafter referred to as China National Gold) is the only central enterprise and the largest gold enterprise in my country’s gold industry. It is the chairman unit of the China Gold Association, the first board member unit of the World Gold Association in China, and the China Committee of the World Gold Association Chairman unit, and the first batch of member units of "Shanghai Gold" to provide reference prices.

Shandong gold group was established in 1996, and was transformed into Shandong provincial state-owned capital investment company in 2015. As a large-scale state-owned backbone enterprise, the gold production, resource reserve, economic benefits, scientific and technological level and talent advantages of the group are all in the forefront of the national gold industry. Since 2017, the group has been the first gold producing enterprise in China. In 2018, the group became a full member of the world gold association. In 2019, it ranked 10th in the global gold enterprises. It has won many honors such as "National May 1st Labor Award", "China Charity Award", "second prize of national science and Technology Progress Award". Shandong gold (600547. Sh, 1787. HK) was listed on the main board of Hong Kong's H-share market and completed a + H listing layout. It has won the honors of "Jinniu No.2 in China's top 100 listed companies" and "China's top 10 gold medal listed companies". Its stock once leapt to the first price in Shanghai and Shenzhen stock markets.

Zijin Mining Group Co., Ltd. is a large multinational mining group focusing on the exploration and development of gold, copper and other metal mineral resources. The company's asset scale, business income and accumulated profits and taxes all exceed 130 billion yuan. It is one of the most competitive large-scale mining companies with the best benefit, the most control of metal mineral resources in China's mining industry. The company has successively listed H shares in Hong Kong (Stock Code: 2899) and a shares in Shanghai (Stock Code: 601899). The company ranks 778 in Forbes 2000 global listed companies, 3 in global gold enterprises, 9 in global non-ferrous metal enterprises, 1 in China's gold enterprises and 1 in China's non-ferrous metal enterprises, and ranks 77th in fortune China's top 500 in 2020.

China Power Construction Group International Engineering Co., Ltd. (hereinafter referred to as "power construction international") is the international business headquarters and core enterprise of China Power Construction Group Co., Ltd., the world's largest, strongest and most influential water conservancy, power and infrastructure construction group. In 2020, the group will be ranked No.157 in Fortune Global 500, No.5 and No.7 in the list of the largest 250 global engineering contractors and the largest 250 international engineering contractors in Engineering News Record (ENR), and No.1 in the world in the field of electric power construction.

Shandong Zhaojin Group Co., Ltd. (hereinafter referred to as Zhaojin group) is located in Zhaoyuan City, Shandong Province, China's gold capital, which is famous for its rich gold production. It is a large comprehensive group company with mining chain and deep processing industry chain as the core and coordinated development of financial industry, environmental protection industry and education industry.

Chalco carries the development mission and responsibility of China's nonferrous metal industry. It has achieved leapfrog development from scratch, from small to large and from weak to strong. Its total assets have increased to 642.6 billion yuan, and its annual sales revenue has exceeded 344 billion yuan. Its business covers more than 20 countries and regions around the world. Its six holding enterprises have been listed at home and abroad. Since 2008, it has been ranked in the world continuously It is one of the world's top 500 enterprises. Chalco has been transformed from a single specialized aluminum company to a multinational enterprise with diversified development of aluminum, copper, lead, zinc, rare earth, engineering technology, industrial clothing property, capital finance, trade logistics, environmental protection and energy saving, innovation and development, overseas development, intelligent technology and other diversified development multinational enterprises.

Founded in 1983, China Nonferrous Metals Mining Group Co., Ltd. (hereinafter referred to as China Nonferrous Metals Group) is a large-scale central enterprise managed by the state owned assets supervision and Administration Commission of the State Council, mainly engaged in the development of nonferrous metal mineral resources, construction engineering, related trade and services.

China Nonferrous Metals Group is one of the earliest enterprises to implement the "going out" strategy and achieve the most fruitful results in international operation in China's nonferrous metals industry. It ranks 18th among the "top 50 Chinese enterprises in globalization". It has been awarded the national "May 1st" labor award, the top 10 Chinese enterprises touching Africa, and the meritorious enterprise in the overseas resource development strategy of China's nonferrous metals industry.