1. shell (China's largest international oil equity producer and one of the largest traders of crude oil and its products).

2. Mobil (the world's largest non-governmental oil and gas producer and the world's largest non-governmental natural gas seller).

3. Castrol (Castrol is a world-recognized lubricant expert, a world-famous brand and engine oil brand in 1899).

4. BP (one of the largest petroleum and petrochemical group companies in the world, a global top 5, and an engine oil brand).

5. Total (one of the four largest petrochemical companies in the world and one of the largest producers of liquefied natural gas in the world).

6. Great Wall (China well-known trademark, China Petrochemical Lubricant Company, the largest professional production and sales group of high-grade lubricants in China).

7. Uni-President (one of the most influential brands in China, China well-known trademark, national key protected trademark and China famous brand).

8. Flowserve (German Flowserve Oil Group, established in 1931, is the largest lubricant manufacturer and engine oil brand in the world)? .

9. Compton (famous brand product, famous trademark of Shandong Province, Qingdao Compton Petrochemical Co., Ltd., in 1992).

1. Kunlun (China Petroleum Lubricant Company is a directly affiliated enterprise of China Petroleum and Natural Gas Co., Ltd., engine oil).