1. exploration and production sector: the company's exploration and production business occupies a dominant position in China's oil and gas industry, and the exploration and production business is the company's main source of profits. In order to meet the increasing market demand, the company will strengthen the exploration and production of crude oil and natural gas.

2. Oil refining and sales department: The company is one of the largest producers and sellers of petroleum products in China. It is engaged in oil refining and sales business in China through 26 oil refineries, 22 regional oil sales companies and 1 lubricant production enterprises, including refined oil refining, transportation, storage, wholesale, retail and export.

3. Chemical Industry and Sales Sector: As an upstream and downstream integrated petrochemical company, the chemical industry and sales sector of the company is at the end of the integrated business chain and is an important link to improve the added value of petrochemical products. This company is one of the major producers and sellers of chemical products in China, producing and selling all kinds of chemical products.

4. Natural gas and pipeline sector: calculated by sales volume, the company is the largest natural gas transportation and seller in China, and its main customers are fertilizer plants, chemical companies, commercial users and municipal utilities owned by the local government.

Extended data:

The difference between oil and crude oil

Petroleum is an industrial term, but relative to mineral resources, petroleum industry is a mineral resources industry. In the process of oil exploration, according to the degree of exploration and proven situation, the oil reserves are calculated and determined. Oil reserves are the results of geological exploration and a kind of original mineral resources to be developed. ?

Crude oil is the oil that is buried in the rock and mined. It maintains its original physical and chemical form, is the primary product of petroleum industry, and its use value is the result of oilfield development. Crude oil export is a developed mineral resource export.

The word petroleum is often used to describe the permeability, porosity and taste of oil layers. The term "crude oil" is mostly used in the national statistics of crude oil production statistics, the evaluation of crude oil physical and chemical properties, and the description of recovery ratio, recovery degree and oil recovery rate.

As a mineral resource, oil refers to oil containing water and gas, while crude oil is an industrial product, in which water and gas have been separated from oil, which is a qualified industrial product.

Baidu encyclopedia-petroleum