In industry, gaseous products under normal temperature and pressure are collectively referred to as industrial gas products, which are mainly used in various industrial manufacturing fields. Industrial gas is known as the "blood" of industry, with the rapid development of China's economy, industrial gas as one of the basic industrial elements of the national economy, plays an increasingly important role in the national economy. Industrial gases refer to gases used for industrial production; According to the different application fields, it can be divided into bulk gas and special gas. Bulk gas refers to industrial gases with purity less than 5N and large product production and sales, and special gas refers to industrial gases that are applied to specific fields and have special requirements for purity, variety and performance.

China's industrial gas industry developed late, after the founding of the country began. Up to now, it can be roughly divided into three stages: 1. Initial stage: China's industrial gas industry started from the founding of the People's Republic of China, and there are not many kinds. Local enterprises are mainly air separation equipment, lack of market competitiveness; 2. Initial development period: Due to the rise of China's manufacturing industry, international gas companies have entered the Chinese market, promoting the rapid development of China's gas industry; 3. The high-speed development period is affected by economic dividends, and the downstream application scenarios of industrial gases are broad. Technological progress has broken the situation of dependence on imports of air separation equipment.

In terms of the industrial chain, the upstream is mainly raw material and equipment suppliers, mainly involving air separation equipment manufacturers and chemical raw material suppliers. Midstream is the industrial gas supplier, which is the application area of downstream industrial gases, including steel smelting, petrochemical, welding and metal processing.

China's industrial gas market is monopolized by leading enterprises in developed countries. In 2020, American Airlines South China Workers, Praxair of the United States, Air Liquide of France, Hyacinic Acid of Japan and Linde of Germany will occupy 85% of the market share in China. The strength of China's domestic enterprises has gradually increased, but the special gas products of domestic enterprises are relatively single, the purity of special gases is low, and the competitiveness is not strong in the international market.

The market share of domestic enterprises was 1.91%, 1.56%, 1.5% and 1.3%, respectively. The first echelon of enterprise special gas business income has a scale, the product has obvious advantages in the field of segmentation, but there is still a gap compared with foreign leading enterprises.

The technical level of the domestic air separation industry of domestic enterprises has reached the world level, so that China's air separation manufacturing has entered the ranks of world powers. The status and development trend of Chinese companies in the industrial gas industry: industrial gas business is an extension of the industrial chain of air separation equipment manufacturing enterprises, air separation equipment manufacturing enterprises engaged in downstream industrial gas business, with many advantages in technology research and development, equipment manufacturing and resource customers. Chinese companies give full play to the above advantages, vigorously develop the gas industry, and have developed into an influential industrial gas supplier in China.