1 PetroChina (the world's top 500 companies, Asia's top 50 companies, one of China's largest crude oil and natural gas producers and suppliers, China National Petroleum Corporation)

2 Sinopec Sinopec (Fortune 500 companies in the world, one of China's largest integrated energy and chemical companies, one of China's two major oil giants, China Petrochemical Corporation)

3 Mobil Mobil (founded in 1882 in the United States, the world's largest The second largest oil company, a large multinational group company, a world-famous brand, ExxonMobil (China) Investment Company)

4 Shell Shell (founded in 1907 by the United Kingdom and the Netherlands, a Fortune 500 company in the world , one of the largest chemical product operators in the Netherlands, Royal Dutch Shell Group)

5 Cnooc (one of China's largest national oil companies, one of China's most valuable listed companies, one of the top ten petrochemical companies Brand, China National Offshore Oil Corporation)

6 Total TOTAL (founded in France in 1920, the world's fifth largest integrated oil and gas listed company, a Fortune 500 company, Total (China) Co., Ltd. Company)

7 Sinochem (in 1950, China’s well-known trademark, listed company, large state-owned key enterprise, Fortune Global 500, one of China’s most competitive brands, Sinochem Group Company)

8 Chevron chevron (founded in the United States in 1879, one of the top ten petrochemical brands, one of the world's largest global energy companies, a well-known industry brand, Chevron Co., Ltd.)

9 ConocoPhillips (the world's top 500 companies, the world's largest multinational energy group company, one of the top ten oil companies, one of the large energy groups, ConocoPhillips International Petroleum Co., Ltd.)

10 Sunoco (founded in 1886 , one of the world's top 500 companies, a joint venture between Sunoil Corporation of the United States and China Petroleum & Chemical Corporation, China Sunoil Corporation)