Sinopec (one of the top 500 enterprises in the world, one of the largest comprehensive energy and chemical enterprises in China, and one of the two oil giants in China, Sinopec Group).
3 Mobil Mobil (1882 was established in the United States, the second largest oil company in the world, a large multinational group company, a world-renowned brand, ExxonMobil (China) Investment Company).
4 Shell Shell (1907 was established in Britain and the Netherlands, one of the top 500 enterprises in the world, and one of the largest chemical product operators in the Netherlands, Royal Dutch Shell Group).
CNOOC (one of the largest national oil companies in China, one of the most valuable listed companies in China, one of the top ten brands in petrochemical industry, China Offshore Oil Corporation).
6 Total (founded in 1920, France, the fifth largest oil and gas comprehensive listed company in the world, a Fortune 500 company, Total (China) Co., Ltd.).
7 Sinochem (1950, a well-known trademark in China, a listed company, a large state-owned backbone enterprise, one of the top 500 in the world and one of the most competitive brands in China, Sinochem Group).
8 Chevron (founded in the United States 1879, one of the top ten petrochemical brands, one of the largest global energy companies in the world, and a well-known brand Chevron Co., Ltd.)
ConocoPhillips (one of the world's top 500 enterprises, the world's largest multinational energy group, the top ten oil companies, and one of the large energy groups, ConocoPhillips International Oil Co., Ltd.)
10 sun Sunoco( 1886, China sun oil company, American sun oil and China petrochemical co., ltd., a fortune 500 company).